I grew up in NJ but now live in Southern California so that won't help you much ;). The rule of thumb is that if there is more than two inches of dirt on the bottom the pool needs to be drained (which is rare but sounds like your situation). What type of pool filter do you have and how much stuff is still on the bottom? Also how is your chlorine reading?
Thank you for sharing your experience and make a short and concise and well edited video. Thank you too for respecting our time and not wasting our time with superfluous and repetitive shots of nothing important.
Just wanted to tell you that your videos have been a tremendous help to me over the last couple of years. I got tired of paying big money to have guys come out and do very little. I still have some learning to do but when I am in doubt I can usually find what I am looking for here. Thank you for giving your experience out so freely. Semper Fi
I have the sta-rite DE filter and have learned after season 1 of new ownership to stay on the light side of the DE additive. For the first year I was putting the exact amount in lbs. of recommended and I was having all kinds of issues with pump variable speed pump trying to prime properly and basically the DE filter had too much DE and was working too hard. Trying to learn and understand the DE filter I took apart and cleaned the filter 3 times last year, the final time for end of season winter storage. Every time I noticed an absurd amount of sludge and more than adequate coating of the filter. You expect some of the DE to drop to the bottom inside the filter when water is drained from it, but not the amount I had. And it is just nasty stuff. I had to shovel it out of the street this year because where I was cleaning the filter - it didn't wash away and was like concrete this year. So, now - this year I am doing a couple scoops less and getting great filtration and pump and everything is working as it should.
D.E. works great & is the best filter element out there. I never use the fiber stuff - there is just no need for it. D.E. is environmentally friendly although most cities don't like it going into the street and then the drains out to the Ocean (they will fine you up to $10,000). It needs to go directly into the sewer. Conspiracy theory: it saves them money as they don't need to charge their filtration as much as they get your used D.E. for free...I hose it off into the grass w/ no ill effects.
I'm new to the pool life, and enjoying it! As far as the maintenance and care of my pool, i'm finding your videos invaluable! So, thank you! Question about DE: if DE is such a carcinogen, do cities regulate where you can backwash? When I backwashed onto the street the other day I noticed DE residue in the street and was concerned about the kids who play there. Now maybe there wasn't that much, but I live in Phoenix, and there are almost 2 million pools here. Doing the math... would you be concerned?
I've heard the same think about Cartridge filters too. I just don't think it works. The grids for a D.E. are made specifically for the D.E. and I don't think it will do anything in the sand filter since the Lateral in the filter just doesn't look like it can be coated with the D.E. I don't see how it will work.
It shouldn't. I am actually working on a Sand Filter video and one we we check for leaks in by adding D.E. to it. If the Lateral is cracked the D.E. will return to the pool. How much D.E. are we talking about - say for a large sand filter with 300-400 lbs of sand? I would like to try it.
All filter manufacturers as well as DE suppliers advise dissolving the DE in a pool-water filled bucket prior to adding it to the skimmer. This will prevent clumping and clogging of the grid elements.
If you are using clean and new POOL de this really makes no difference. POOL de will not clump and as soon as it gets wet it fully "disintegrates". It is a fully unnecessary step that is a pita and makes more of a mess. Not to mention the DE has to pass through the pump before it gets to the filter. If you think DE will clump and pass through a pump then you do not know how pump impellers work. Also of note: Backwashing does not remove all of the de, so if you charge your filter with the full amount of de you are essentially over charging the filter and you will likely experience higher pump pressure with less flow. Repeated backwashing without a tear down cleaning can exacerbate the issue.
That sounds about right - I think they made two large models a VA- 38 and A VA-52 so eight scoops falls right in the middle of both sizes. The VA-38 IS 38 sq ft and the VA-52 is 52 sq ft is a filter. There was no 45 model...
If your theory is correct and 6 lbs = 6 scoops, then if you have a 10 lb bag of D.E. - after taking out 6 scoops you should be able to weigh the bag on a scale and it will be 4 lbs in total weight after the 6 scoops. But that is not the case. Since D.E. is a fluffy powder it actually would take a 2 lbs coffee can to equal 1 actual pound of D.E.. So the 1lb pound Aladdin scoop would be 1/2 lb of D.E in each scoop. After taking 12 scoops out of a 10lb bag it will weigh 4 lbs. Confusing as heck ;)
I hear what your saying (referring to the amount of DE) but how did you determine this? I was told that you have to round it off. Example if I’m using a 1LB bucket, if the area sq ft is 48, you should pour in 5 scoops of DE. If the area sq ft is 36, you should pour in 4 scoops of DE. Is this wrong?
The only model that requires less is a Quad DE filter. If it as FNS Plus add the amount I show in the video. I have new filters on my route and nothing has changed.
The Pentair FNS Plus Manual states 6 lbs. of D.E. or 12 1 lbs. coffee cans so it is correct (pg.5 ). Not sure where Leslie's get's their 7.5 lbs. number from. That is about 15 1 lbs. coffee cans... I suggest the Aladdin Scoop as the most accurate way to add D.E. to your filter.
I found an easy way to reinstall DE filter pads that needs to be shared. I don’t do videos so perhaps you can add this to one of yours. I was one of those who struggled with getting my Hayward filter pads realigned after taking them off the manifold. There was always one or two that would leak DE back into the pool on completion. I thought one or more may have torn but it turned out the filter pads weren’t seated properly to the manifold. I found it by running the pump in the backwash mode (cover off) and seeing water leaking from several of the connections. After disassembling I turned the manifold upside down, started with the short pad and worked clockwise outside to inside making sure all pads were well seated into the manifold and there correct spacers. The hardest part was getting the long bolt back into the manifold hole and it wasn’t that bad. All in all this was a much easier task than working from the normal position and no leaks or DE back into my pool. As a side note, I almost purchased a new filter set at $100 plus.
Not sure what the number means - no one to ask as everyone who designed that filter is 6 ft under. From my experience you will be fine with eight scoops. Maybe you want to start to think about replacing that filter with a nice new modern cartridge filter. I bet that Anthony filter will bring about $50 at the scrap metal place ;) And you can sell your grids on Ebay for more $
That is rated by the manufacturer as a 25 sq ft DE filter. So you would only need 5 scoops of D.E. - I think there is probably too much D.E. in there if you put the entire bag in...
That sounds like a SMBW2024 D.E filter. I would add 4 or 5 scoops of D.E. - i take it the label has worn off identifying the filter size. That is a 24 sq ft D.E. filter.
Thanks so much for your videos. They're really helping as I try to keep this old pool alive, & fight the green & the mosquitoes. Being forced to learn mostly on my own, as I can't seem to get service folks to call me back. It's busy time f. that sector, I suppose. I want to get good at this stuff, & maybe even transition to a household chemicals regime eventually, but right now, I need guidance (or maybe it's hand-holding), even w. the help of your excellent videos. Anyway, thanks.
It is understandable that the consumer will not know this - the disclosure that Diatomaceous Earth is mixed with crystaline silica is listed very vaguely. The bag mentions that it contains crystaline silica in varying amounts per bag. Most retail sales associates who don't use this in the field never read the fine print. It should be listed on the front in large print and not in microscopic print but it is classified as an occupational hazard -i.e pool guys who use a ton of this stuff ;0
There's no obvious holes in them it's a purex idk what model can I email u pictures of it? And even if it has some leak can I still use it if I clean the DE out the pool?
Alright you wanted to thank you, you're just one of those people that's very easy to listen to. Lol. I got to the back washing portion of this and BAM, you answered my question. I've been dealing with a pool where I think even though I have a new air pump, the guy had been kind of screwing me over that was doing the servicing and he just wore it out too quickly by just not addressing the manifold that he broke and some other things, but anyway, I've been learning how this all works and trying to get it down and it looks as though I have an impeller shaft seal that's leaking and causing some air. Watching you gave me the confidence to not take ppl on their works, alone, and figuring out how it all works. & then repairing it myself! Thanks!
Thanks for your response to my other question, I have one more question. After the last filter service (grid out) I added 8 cans de. During the add, after 3rd can a brief puff of de came out of the SUCTION HOLES at the bottom of the pool. It stopped and thereafter functioned as normal. No de leaks. Any idea what would cause this unusual occurance? Thanks! I would guess about a qtr to a half CUP of de. The navigator sucked it up. Pool clear next day. One more, I noticed a couple of grids had the internal skeleton cracked but no holes yet. What BRAND do you like for Hayward. I now have Pleatco & they lasted maybe a few years. :) :)
Probably just some air in the line causing the DE to back up out the main drain line. Seen it happen. You can dilute the DE in 5 gallon bucket and slowly pour it in to prevent that in the future. I've used all brands and they basically are the same - Pleatco, Filbur and Unicel. Whichever is the lowest priced 😀
I have taken over the care of a children's summer day camp pool. I am very confused about how much DE to use. The filter is an old stainless steel Purex Triton Nautilus Plus (NPS-72). Obviously it is a 72 Sq. ft. filter. The label on the filter says to add 11 lbs. of DE. however according to your video I should be adding about 14 lbs. The pool gets heavy use. It is 30x50 and holds about 37,000 gallons of water. Can you give me advice about how much DE to use? Thanks for all your videos, I have learned a lot!!
I usually will add 12 scoops to a 72 sq ft filter and in your case since it gets heavy use you will be backwashing it frequently - so after a good backwash add 5-6 scoops. I would say after the third backwash take it apart and clean it. You might not get 6 months between cleaning in a pool the big and used that much. Each scoop is actually 1/2 lbs. So you only need to add 6 lbs. Confused yet? - ;)
Ironically I have an account that was getting the fiberglass pool re-glazed and they wrapped the filter in kitchen plastic wrap to protect it. I left the plastic wrap on the top and it kept me from getting fiberglass shards in my arms when I cleaned it ;)
Figuring out how much DE to use Start by noting the PSI reading on the filter with the pump running. Mix 1/4 cup of DE with water in a bucket and pour that slowly into the skimmer. Remove the skimmer sock, if any, before adding DE. Give the system about two minutes to stabilize. Note the pressure on the filter and repeat the second and third steps until the pressure has gone up by one PSI. This will typically take around 1-2 cups of DE.
I've been fighting algae, so today I cleaned my 60 sq. ft. filters (also replaced two that had holes) and added 12 scoops of new DE (I hadn't seen your video yet). Notwithstanding all that cleaning and replacing, after running the pump for several hours, I checked back and the pressure had gone up all the way to the top of the gauge (30 lbs). I don't understand why cleaned or replaced grids would so quickly lead to such high pressure. I'm at wits end in dealing with this algae -- and now having pressure so high I had to shut the whole system down.
Just give the filter a good backwashing and add 4-5 more scoops of DE. The algae dust clogs up the DE filter grids very quickly as it coats the DE and doesn't allow water to flow through. If after backwashing the same thing happens you will need to clean the filter again. It is a process and you might need two or three cleanings until the algae dust is gone. Nothing to worry about - I see it all the time.
Swimming Pool Tips, Reviews & How To -MrDgvb1 Thanks for the tips. For some reason, my filter doesn't have the capability of being backwashed. So I guess I'll just have to clean it again. Funny thing is, I asked the store manager at Leslie's (where I bought two new grids yesterday) whether I'd have to clean the filters every couple of days while fighting algae, and she said no, the filter can handle a lot of algae before you need to clean it. I should know better than to ask them anything. Thanks again!
Swimming Pool Tips, Reviews & How To -MrDgvb1 By the way, thanks for the heads up about the carcinogenic properties of DE. I've just always tried not to breath it, but I think today I'll go to Lowe's and see about masks. Will the cheap paper kind do or does it have to be a full fledged gas mask type thing?
hi, great videos....so helpful. i took apart my pentair 60 plus de filter and cleaned all grids....then put back together. no rips in grids....manifold good...etc. put 6lbs of de as recommended. the question I have is only on the initial adding of de......I get a small amount of de back in...... is it normal to get some de back in pool ? a small amount came back in pool. once I vaccumed.... no more. thanks
Normal in some cases. If it only happens on initial start up after a cleaning it is probably DE that went back down the suction line when you were taking it apart. Once pool turned on that DE came back in and out the return lines.
Thank you so much for the information. I am now confident about caring for my own filter. The simple instruction to determine the square footage of my filter in order to determine the proper amount of DE has eluded me until now. Thank you, thank you, thank you. Next I will search your videos to determine what amount to add (if any) after flushing or backwashing the filter. Big Smiles :)
Just send me a personal message. Or upload a video of your pool and post the link in a personal message and I would be glad to further assist you. You can load it as "unlisted" if you don't want the world to see it ;)
Two questions: Ques. 1) How long should should I let my 60 gal filter run, after I cleaned out my tank, cleaned the grids and added brand new Earth to the filter (10 cups as you suggested)? Ques. 2) You suggested once a month to run the backwash and add about two cups O' earth in the skimmer. Do I use the valve pressure gauge to ensure I have replaced enough earth?
For your size pool based on the photos you sent, probably 5-6 hours in the Summer should be enough for one full cycle. If the water looks clear and good you can try lowering the time down a bit more to save $$. Maybe 4-5 hours. I only backwash when the pressure gets above 10 psi from when I cleaned it. So if after cleaning you are at 20 psi abnd after 2 months it goes to 30 psi - backwash it. Usually as a rule I add 4-5 scoops back in. There is no hard and fast rule but about half of the initial charge is fine. You just want some DE back in there. I try not to do more than 2 backwashes before I take it apart and clean it again. Since your grids are old you might notice the pressure rising quicker. If so then new grids are in order in the near future.
So, you're putting DE powder in prior to backwashing, then you backwash; repeat? Or you're backwashing and clearing the canister (several times) and then adding your DE powder to complete the process?
I just installed a new Heyward EC50 DE filter. I forgot to add the DE can I just add it now? I opened the pool and it has been shocked and chlorinated. is it ok to add DE now or is there a process to follow the filter has been running for 24 hours thanks
Changing out the entire filter assembly today. DE keeps leaking in pool. Should I vacuum to waste all the DE at the bottom of the pool before I put in the new filter?
Sounds like the pressure gauge is bad. It is like a $10 part. If the pool is flowing normally, then the gauge went bad. This happens all the time. I bet the gauge is pretty old since the filter itself is ancient ;)
Hey, Thanks for the videos, I clean the filter a purex triton 2000, took the screens out and washed them and after putting everything back together I added the DE but the NO pressure read on the gage, I opened the air valve until water shot out to make sure that all air went out but pressure only went up to 2 psi, this normal?? Any tips?? Thanks
Thank you for your video. I always feel that by going by the recommended amounts of D.E. on the package or even on the filter it is just a bit to much. Can you recommend how much D.E. I should use on a Pentair Quad 80 D.E. Filter? Much appreciated. I also liked your advice on backwashing for 1-1.5 minutes. Many others show 2-3 minutes and then repeating the process which really seems excessive. Can you also suggest the amount of D.E. for my Quad 80 to add after doing a backwash? Thanks again!
I did make a video on it but haven't put it up on my Channel yet. The recommended amounts from my experience out in the field are too much. Here is the video link for you on the amount for a Quad DE: ua-cam.com/video/C0hC88udxBY/v-deo.html
Thank you for this great video. I have a large public DE pool that is gravity fed. There is 100+ square feet of filter surface area in a pit. Should I follow your same guide; Saying it is 100 sqr ft of filter, then 17 to 20 scoops of DE?
My filter is horizontal, its an old Anthony Pool filter, and the label on top of the tank reads " filter area" 45...I'm assuming that is the square footage. So I would think according to the DE add chart you give, since there is no 45 reading I would probably have to put in...8 or less?
thanks for the vids by any chance are you NJ i have followed your videos but we are still cloudy and not able to swim when i opened the pool (inground) it was black to green muck scooped wheel barrels of muck out now dirt on bottom and still not fully clear need assist please
Question, every time I do a phosphate cleansing in my pool my DE filter gets clogged every week for months. Is that normal? What is normal for DE filter cleaning I’ve heard 3 months? My average is 2 or 3 weeks if I treat prostate then it’s every week. I know because I have no pressure in my system
D.E. is mixed with crystaline silica. On bag: "Breathing crystaline silica dust [ingredient in D.E] over prolonged time ...Inhaled crystaline silica from occupational sources has been classified as carcinogenic to humans (group 1) by the International Agancy for Research of Cancer." According to the manufacturer once the D.E, gets wet the crystaline silica dust is inert, while it is dry and breathable it is a carcinogen. This stuff in any amount in your lungs is bad, very bad...
I have an old and i mean old filtering system for an Anthony Pool. A veritcal tank. I just replaced ( and they were hard to find) 5 of the disc filters. When i turned on the filter and cranked the tank handle... a cloud of earth came pouring out of the spout in the pool. This has been a ongoing issue. I cannot vacum the pool because it dumps right back into the pool. I'm totaly frustrated. What could be causing this?
I am looking at this schematic: www.poolplaza.com/C-Anthony-Apollo-Filter-Parts.html If all the grids are intact then check parts #12, 13, 14. #12 is the elbow - check for any cracks. Not sure what part #13 does but if it is missing or damaged DE can leak from here. And last is #14 the air bleeder. I would also double check the grids. Interesting thing about these filters is that even with ripped grids they seldom leak DE into the pool - at least from my experience. If all those parts check out I wonder if the brass backwash is malfunctioning. Truthfully I haven't serviced one with a working backwash as they seize up over time. I would have suggested a new filter vs new grids...
Swimming Pool Tips, Reviews & How To -MrDgvb1 Thanks for the quick reply. The schematic is for a different filter, ours lays lengthwise... yeah, its old, the filters grids are new. there is a valve attached to one of the pipes that comes from the tank . Not sure what its for. Maybe a backwash valve, i try shutting it but it turns and turns... never bottoming out. so maybe... just can't find information on this system. I'd love to get a new system but right now I can't afford one.
I have the blue scoop from Leslie's. A lot of people are saying it only holds ~.75 lb, not 1 lb.. I'm trying to figure out how many scoops I need after a backwash for a 60 sq. ft. Hayward. Your guidelines of 3 to 4 scoops assumes that 1 scoop is 1 lb., so I guess I should be adding closer to 5 scoops. Does that sound right to you?
The Leslie Scoop is the same as the on in this video. 1 scoop equals 1/2 lb of D.E. So 2 scoops equals 1 lb. When you charge your filter you will use 12 scoops which is 6 lbs. So recharging it with 5 scoops is fine, which would be 2.5 lbs. There is no exact science after a backwashing but the Rule of Thumb is to put 1/2 back in. Hope that isn't more confusing ;).
Swimming Pool Tips, Reviews & How To -MrDgvb1 Thanks for the reply. So are your guidelines for recharging (towards the end of the video) based on a 1/2 lb. or a 1 lb. scoop? If I'm understanding this correctly, you're using a blue 1/2 lb. scoop but the guidelines assume a 1 lb. scoop. Also, I was told that you should gradually taper off the amount you recharge after each backwash, since more and more DE is left in the filter over time. Is that what you recommend? Thanks again.
mxrphaseninety The numbers at the end are for a 1/2 lb scoop. I kept them low on purpose as I find that customers will usually over charge their filters. The low amount on a backwash recharge works perfectly fine. A lot of D.E. remains in the filter. I usually will backwash once, twice maybe before taking it apart. Backwashing is inefficient and yes over time more and more D.E. will build up in the filter. I switched to Perlite recently for all my filters.
I was told you can put small amounts of DE in a Sand Filter, up until the Pressure Increases by 1. Suppose to allow your Sand Filter to catch smaller particles of debris. What is your opinion on this? Thank you.
I have the same question. My Purex 4000 series filter says to put in 6lbs. It looks to be the same filter as the one you are showing here. I have an OceanBlue branded DE scoop that says it is 1lb for each scoop. So I also would assume that 6lbs or 6 scoops is enough using this scoop I have. The 1lb scoop I have looks to be the same size as yours. Makes me think that the Aladdin instructions are a bit off. Could it be dependent on the brand of DE?
Have you ever thought about Cellulose Fiber? My company here in Austin has a lot of D.E. filters that don't have a waste line that leads to the sewers. Most of them have a backwash hose that i extend to a corner of their yard, so it seems cellulose fiber would be better because it is biodegradable and safer for the environment. Have you ever tried using it?
Don't really use it myself but I suppose I can film a video test with it and then take it apart in 6 months to see how it does vs D.E. Technically D.E. is fine for the yard - it is the chlorine coming out of the pool from a backwashing that can kill the lawn & plants I rinse D.E. filter grids off in the grass all the time. Been doing it for several years with the only complaint coming from the gardeners ;)
Swimming Pool Tips, Reviews & How To -MrDgvb1 That would be really cool because i don't think anybody has done something like that yet. Also i wish we were worried about the grass dying but my problem and his problem is the fact he has 2 small children that play in the yard. I don't want it to have any effect on them especially if they breathe it in or something.
Aaron Ware Yes, that is an issue once the D.E. dries again. Supposedly it becomes inert after it is coated with dirt but I don't buy it. I've swapped out perfectly working D.E. filters on several of my accounts with cartridge filters for that very reason. Usually I won't mention that it can cause lung disease and has a cancer causing element in it - I focus on the mess factor and that cartridge filters are much cleaner. That usually does the trick. 9 out of 10 times the customer is also tired of all the D.E. in their yard. I guess the Trump Card is the fact that it is unsafe if you have to play it...
Hello. Looks like dead lagae or pollen is on the bottom of pool and everytime I vacumm it, it returns to pool. I can see the return pipe shoots green stuff. its almost new cartridge. Its a signle cartrirdge filter. Adding some de powder would help better filteration?
With those small filters once they get full and with algae that is pretty quick - you will need to stop vacuuming and clean the cartridge. Also check to see if cartridge is seated correctly. DE won't help and may make it worse.
yes de is not intended for cartridge filters. Cartridge filters dont filter as fine as de; De will filter the smallest particles out of your pool down to 2-3 microns so i recommend to anyone that has "passing" problems to just get a good used or new DE filter with backwash will solve many of your problems remember if anything but clear water is coming out your jets then you have a filter issue either it is put together wrong, a piece has a hole or crack, or you have a cartridge filter, check the little tube on your cartridge filter if it doesnt have a screen on it, then that is your leak, its common on cartridge to have that screen break then u get problems you can just plug that little hole and you will be alright..
Hope you're still monitoring the video. I have a leak at the top of my filter where the pressure gauge screws in. This is my second gauge. Neither one ever seemed to give a true reading it seems. Of course I got both at P a P. I asked them last time if they carry a "heavy duty" or just a better grade gauge and all they offer is the lowest generic brand. Yours looked nice! LOL. Where can I get the right and better one? Mine is a Hayward and the threading comes out the back, not the bottom. Thanks!
What model number is it? Are you using Teflon tape on the threads? There are also a few reasons why the pressure gauge gives a false reading. I can go over them if you want - is your pressure reading high or low all the time?
Swimming Pool Tips, Reviews & How To -MrDgvb1 Hey...Thanks for replying. Yes, I did use teflon tape. tried winding both ways :( To me, the pressure reading always seemed low. I always attribute it to being such a basic, crappy gauge. Of course without a backup way to measure who knows? I believe the model is DE4820.
John Ferguson I will look into it for you and get back to you over the weekend. You tank lid might be stripped - which of course is not good. But let me check your filter model and check with my Hayward Rep.
Swimming Pool Tips, Reviews & How To -MrDgvb1 Again, thank you for your help. When you say, the tank lid may be stripped. do you mean right where the pressure gauge screws in? By the way, the gauge "reads" about 25lbs. We backwash every three months.
John Ferguson The gauge should move up about 10 psi as the filter gets dirty. Especially a D.E. filter. Cartridge filters get less movement in the gauge.You can order a factory gauge online I suppose unless the price is dramatically higher than Pinch A Penny. Try putting some waterproof silicone on the threads along with Teflon tape. The top of some filters get stripped out as they get older. If it is not a giant leak the silicone may stop it.
Hi, I have a Sta-rite model PLD 50. Its reads on label - D.E Pre-coat 6 LBs (2.7 KG); 30 SQ FT. How many coffee cans scoops do I put in? I already started the filter with (opening pool) with 2 1/2 coffee cans. Is that enough or to much? I have an above ground pool. Thank you.
PRAYERWARRIORKING 6 lbs would by 12 lbs coffee cans since DE when it is dry is half it's weight. So each 1 lbs coffee can is 1/2 lbs of DE. So for 6 lbs you will need 12 cans. 10 cans would be sufficient.
at what point do you throw in the towel and buy a new DE filter? i've been having problems with my ec40 not filtering my pool properly. The DE is coming back into my pool and its creating a coating at the top.
johnvito marinelli If your tired of replacing grids and dealing with DE then switching to a cartridge filter is the way to go. I recommend the larger size cartridge filters like the Pentair Clean & clear 320 or 420 for pools over 10,000 gallons. I believe yours is a bump filter so your pool is not to large?
Interesting: my Hayward DE3620 owners manual says it takes 4.5 lbs of DE for my filter. I also have a 1 pound scoop, so that would be 4.5 scoops. where did you get the full scoop per 5 sq.ft. (7 scoops)? great videos by the way - thanks!
Each 1 lbs scoop of dry DE is actually 1/2 lbs. So 2 scoops equals 1 lbs. So in your case it would take 9 scoops for 4.5 lbs of DE to recharge your filter per manufacturer specs.
my Hayward scoop says "contains 1 lb. of DE when filled level with top" - and doesn't your scoop say 1 lb? - so you're saying it's not a lbs., but a half pound, and my 3620 only really takes 6 scoops? just getting clarification - thanks!
Thank you ! I have installed a new JDE60 60sq ft DE in - Ground Filter, and new pump. the recommended add 7 pounds of DE powder, but the installer said that it must add 12 pounds for the first time, Now I have lots of DE powder bottom of my pool, so you think it is too much DE powder or is something else ? What I should do? Many thanks !
One question, re. a Pentair Nautilus FNS 60: A pool store guy recommended Jack's Magic Filter Fiber Stuff as DE alternative. It's touted to require "less than half the amount" of DE, to "extend filter runs," to reduce filter clogging, be biodegradable, non toxic, and more "environmentally friendly." Had any experience w. this? I bought it, to use re-starting things after disassembling & cleaning the filter, but then was talked out of using it by a friend, who knows more than I (no expert, tho).
Hello. Each time I put DE in m pool the DE goes at the bottom of the pool. What do you think the problem is? And I do I know if I have a leak in the filter ,I checked my cartridges and they look fine... My pool is getting greener more often and I don't know why ,the level of Florine is fine the filter is clean... Thank's for reading me. Alain
What brand and model filter do you have? Sounds like there is a D.E. leak somewhere . The fact that the chlorine is at a good level and the pool is getting green means the filter has a leak. Let me know the filter info and I can further help.
So While backwashing you just let it run for 1.5 minutes, and that's good enough? I normally run about 30 seconds, switch back to filtrations, for 30 seconds, to agitate more DE, when I do that, I notice I get out more dirty DE upon cycling it, are you saying that isn't needed?
@@SPL This most definitely be true, I'm normally sure I'm not tightening my grids too tight, and then when I have to open to do a full cleaning, I'll notice a grid is cracked, but normally only on the edges. Also thanks for the quick response, that alone made this video go from a subject I just looked up to a new subscription!
I've seen the recommendation for 12 scoops for a 60 sq. ft. filter...My filter documentation says 6 scoops/pounds....Have the newer models changed or something requiring less....somewhat confused. Its a Pentair FNS Plus
Thank you for your videos. I have a question. I have a Hayward EC65 bump filter that requires as per manual 6 lbs of DE. The filter is 27sq. Your video instructions shows Aladdin scoop states 5 sq = 1 scoop for vertical filters and 1 scoop for 7 1/2 sq for bump filters, (which I have). My question is if the manual of the filter states 6 lbs, am I adding 6 scoops? or as your video calculation 3.6 scoops (3.6x 7.5= 27). My pool is a 16x32 app 21000 gallons. I run a Hayward variable speed pump usually on low speed for 18 hours. I sometimes find my water cloudy too. Try to keep my chemicals in line with pool calculator. Do you think if I upgrade my filter to Pentair Quad 60 will help (twice amount coverage). I like a filter comparable to my variable speed motor high efficiency. Thank again for your help and service.
6 lbs would be 12 scoops - too much for your little filter. Upgrading the filter will help for sure. When you say low speed all day what RPM are you running at? The cloudy water could be due to poor circulation also.
Thank you. Yes I increased my filter time seems to correct the cloudiness. I now correctly calculated my size of pool now with at least one turn over a day. Before I was shy of that. I now do Low speed for 1500 rmp 20 GPM went from 12 hours to 20 hours per day. Fix the problem. If I understand right one scoop of aladdin is 1 pound?. I going to upgrade my filter too, which I picked up from a friend to a newer hayward grid 36 sq. no more bumping, and its was for free. Thank you.
How do you know the square footage of your filter? I would think you'd measure it in cubic feet, wouldn't you? We have a Hayward Perflex EC-50AC filter for ours, and my brother managed to waste almost an entire bag of DE in three days, and I was wondering if that was normal.
just clean my filter have a pld70 from sta rite after the 5 scoop I saw some DE coming from my return line. its put out like for 2 minutes then stop making my pool almost white I did have it running and it clears up in 2 hours I inspect the filter no problem found .when I clean it . it this normal ??
***** Sometimes a small amount of DE will enter the line where the modular cartridge is sitting. This happens on the Pentair Quad DE filters sometimes when I clean those. Even a small amount of DE looks like a ton when it hits the pool water. It should settle down to the bottom and you can vacuum it out. If the filter is running clear now that was what happened.
Take the filter apart and remove the top manifold and inspect all of the grids for tears. Look also for a leak on the manifold and on the thin air bleeder tube.
I know this is old, but for others who may stumble across it - like Bob said it is the dome! Don't touch the dome. I learned this the hard way. And if you did get it on you, rinse in the shower then scrub with bar soap 🧼 not liquid; helps tremendously.
Repaint the dome with Rustolem Hammered Metal paints applied by brush or roller from a can. Use two coats yo lovk in the fibers Silver works great in hotter climates.
I have a new pool that just got concrete. The pool water was extremely dirty when the concrete was finished but was cleaned by one of the guys. When I swim I can see small particles floating in the water. Some I can tell are from the styrofoam and some look like tiny pieces of pool noodle. Is there a chance that I didn't put enough DE in my filter after I backwashed it last month? I put in 8 32oz cups like the pool man said but I didn't pack it down. It was loose.
Dena Dendy Do you also have a Salt Water System? The D.E. filter will pick up very tiny particles regardless if the grids are heavy or lightly coated as long as there is D.E. in the filter itself. There would be an overall clarity problem if the D.E. filter was low on D.E. and you wouldn't notice large debris floating in the pool per say.
Dena Dendy I am going to say the particles you see are from the salt cell reversing. Especially Common with the Pentair salt cells. When the salt cell reverses it blows back lots of particles and since it comes after the filter they go right into the pool via the return line. Try using a bottle of this to see if the blow back is reduced: www.amazon.com/Purple-Stuff-Size-32-Ounce/dp/B001EBEOGU/ref=sr_1_1?s=lawn-garden&ie=UTF8&qid=1438655563&sr=1-1&keywords=jack%27s+magic+purple++stuff
Thanks for all your Tips, please help me with an High Pressure issue in my filter. It is a new Pentair 48. I clean the panels put the DE and the initial pressure reading is 27. Is that normal ?
Usually not unless there is some back pressure from the return lines. I have some pools that have high starting pressure. If the flow is good it may not be an issue you need to worry about. Usually it is around 20 PSI after cleaning.
hello- i had a rip in my d.e. filter scrren and did not know it and pool bottom with the powder. i can not get new filter screan yet. what can i do to clean bottom of pool? thanks!
+Bill & Denisse Myrie Not much unless you want to invest in a portable pump for a couple hundred dollars. Just replace the grid and manually vacuum the D.E. up once you put the filter back together. It won't do any harm sitting on the bottom for a few days.
The outside label on my Pentair DE FNS-Plus 60 Filter it says to use 6lbs of DE. All the bags/boxes of DE I have seen say to use a lot more than that, 9lbs or more. That should equate to 6 scoops as I measured a full scoop and it comes out to 1lb per scoop.
Your scoop looks similar to mine (may be smaller) which I purchased from Leslie's. I weighed it on a postal scale and it was pretty much one pound. The sales guy at Leslie's told me it was a 1/2 pound scoop where others online said it was a 1 pound scoop. I had to test it myself to make sure. UPDATE: I just went outside and re-measured a scoop. Without taping it down to get all the air out just let it go over the top a little it will be one pound. See link: photos.google.com/share/AF1QipPwCLRhDNlavFfe2lzK6L1dR25Nq6Zbyj8As2FS7AEX_8lq6gQwqu7MlhVdrgaSqg?key=N2JidnV3WlFlX2VvNTJpaHNqNThtaHVNSzI2dl9B
In my link above I added the bottom of my scoop. No labels other than Leslie's sticker. I originally commented only because these bags/boxes of DE say to use more than what the filter manufacturer says to use. Though it may be fine it throws money down the drain (or skimmer :-)) if the required amount is pounds less.
I use this one on my route: 3M Full Facepiece Reusable Respirator 6700 you can see it in this video: ua-cam.com/video/xcJbMnCyJ_E/v-deo.html you buy the filters separately depending on what you need - I went for the top of the line filters.
need help! I am a new pool owner and I did the mistake of adding DE EARTH to a hayward cartridge filter. once I realized that I wasn't supposed to do this I cleaned the cartlidges, but I an now seeing some DE in my pool and the water is cloudy. What are my options ? thank you
Hi, When I run the filter the DE powder goes back to the pool. I uninstalled, open the whole thing, clean it, inspected, there;s no rips on the grids anywhere (it's a new set of grids just bought last year). What do I do wrong? what's might be a problem? Thank you for your help.
For those without a dedicated DE measuring cup: 1 lb of DE by weight = 48 oz in (loose) volume: 6 cups, 3 pints, or 1-1/2 quarts There are rules-of-thumb, but the best rule is to follow what the filter manufacturer says. I have a Hayward ec65a whose filter area is 27 sq ft. If you use the divide-by-6 rule, that’s 4-1/2 lbs; if you use the divide-by-7 rule, that’s just under 4 lbs. However, the manufacturer insists on 6 lbs. So who’s right? The manufacturer, always. That said, after backwashing, best to use 75% to 80% of that total, which is really for a filter completely cleared of all DE. So in this case, it comes down to 4.5 to 4.8 lbs, which is close to the divide-by-6 rule. Voila!
If you mean six of these scoops no - that is about 3.5 lbs. Each scoop of dry DE with the scooper in the video is 1/2 lb of DE. So two scoops equal 1 lb of DE. 6 scoops is 3 lbs.
I grew up in NJ but now live in Southern California so that won't help you much ;). The rule of thumb is that if there is more than two inches of dirt on the bottom the pool needs to be drained (which is rare but sounds like your situation). What type of pool filter do you have and how much stuff is still on the bottom? Also how is your chlorine reading?
Thank you for sharing your experience and make a short and concise and well edited video. Thank you too for respecting our time and not wasting our time with superfluous and repetitive shots of nothing important.
+Charles Hand Thank you!
Thank you for sharing all of your 'pool how-to' videos. Saves a lot of time and it is very much appreciated.
Just wanted to tell you that your videos have been a tremendous help to me over the last couple of years. I got tired of paying big money to have guys come out and do very little. I still have some learning to do but when I am in doubt I can usually find what I am looking for here. Thank you for giving your experience out so freely. Semper Fi
I have the sta-rite DE filter and have learned after season 1 of new ownership to stay on the light side of the DE additive. For the first year I was putting the exact amount in lbs. of recommended and I was having all kinds of issues with pump variable speed pump trying to prime properly and basically the DE filter had too much DE and was working too hard. Trying to learn and understand the DE filter I took apart and cleaned the filter 3 times last year, the final time for end of season winter storage. Every time I noticed an absurd amount of sludge and more than adequate coating of the filter. You expect some of the DE to drop to the bottom inside the filter when water is drained from it, but not the amount I had. And it is just nasty stuff. I had to shovel it out of the street this year because where I was cleaning the filter - it didn't wash away and was like concrete this year. So, now - this year I am doing a couple scoops less and getting great filtration and pump and everything is working as it should.
D.E. works great & is the best filter element out there. I never use the fiber stuff - there is just no need for it. D.E. is environmentally friendly although most cities don't like it going into the street and then the drains out to the Ocean (they will fine you up to $10,000). It needs to go directly into the sewer. Conspiracy theory: it saves them money as they don't need to charge their filtration as much as they get your used D.E. for free...I hose it off into the grass w/ no ill effects.
I'm new to the pool life, and enjoying it! As far as the maintenance and care of my pool, i'm finding your videos invaluable! So, thank you! Question about DE: if DE is such a carcinogen, do cities regulate where you can backwash? When I backwashed onto the street the other day I noticed DE residue in the street and was concerned about the kids who play there. Now maybe there wasn't that much, but I live in Phoenix, and there are almost 2 million pools here. Doing the math... would you be concerned?
I've heard the same think about Cartridge filters too. I just don't think it works. The grids for a D.E. are made specifically for the D.E. and I don't think it will do anything in the sand filter since the Lateral in the filter just doesn't look like it can be coated with the D.E. I don't see how it will work.
It shouldn't. I am actually working on a Sand Filter video and one we we check for leaks in by adding D.E. to it. If the Lateral is cracked the D.E. will return to the pool. How much D.E. are we talking about - say for a large sand filter with 300-400 lbs of sand? I would like to try it.
All filter manufacturers as well as DE suppliers advise dissolving the DE in a pool-water filled bucket prior to adding it to the skimmer. This will prevent clumping and clogging of the grid elements.
If you are using clean and new POOL de this really makes no difference. POOL de will not clump and as soon as it gets wet it fully "disintegrates". It is a fully unnecessary step that is a pita and makes more of a mess. Not to mention the DE has to pass through the pump before it gets to the filter. If you think DE will clump and pass through a pump then you do not know how pump impellers work. Also of note: Backwashing does not remove all of the de, so if you charge your filter with the full amount of de you are essentially over charging the filter and you will likely experience higher pump pressure with less flow. Repeated backwashing without a tear down cleaning can exacerbate the issue.
That sounds about right - I think they made two large models a VA- 38 and A VA-52 so eight scoops falls right in the middle of both sizes. The VA-38 IS 38 sq ft and the VA-52 is 52 sq ft is a filter. There was no 45 model...
If your theory is correct and 6 lbs = 6 scoops, then if you have a 10 lb bag of D.E. - after taking out 6 scoops you should be able to weigh the bag on a scale and it will be 4 lbs in total weight after the 6 scoops. But that is not the case. Since D.E. is a fluffy powder it actually would take a 2 lbs coffee can to equal 1 actual pound of D.E.. So the 1lb pound Aladdin scoop would be 1/2 lb of D.E in each scoop. After taking 12 scoops out of a 10lb bag it will weigh 4 lbs. Confusing as heck ;)
I hear what your saying (referring to the amount of DE) but how did you determine this? I was told that you have to round it off. Example if I’m using a 1LB bucket, if the area sq ft is 48, you should pour in 5 scoops of DE. If the area sq ft is 36, you should pour in 4 scoops of DE. Is this wrong?
The only model that requires less is a Quad DE filter. If it as FNS Plus add the amount I show in the video. I have new filters on my route and nothing has changed.
The Pentair FNS Plus Manual states 6 lbs. of D.E. or 12 1 lbs. coffee cans so it is correct (pg.5 ). Not sure where Leslie's get's their 7.5 lbs. number from. That is about 15 1 lbs. coffee cans... I suggest the Aladdin Scoop as the most accurate way to add D.E. to your filter.
I found an easy way to reinstall DE filter pads that needs to be shared. I don’t do videos so perhaps you can add this to one of yours. I was one of those who struggled with getting my Hayward filter pads realigned after taking them off the manifold. There was always one or two that would leak DE back into the pool on completion. I thought one or more may have torn but it turned out the filter pads weren’t seated properly to the manifold. I found it by running the pump in the backwash mode (cover off) and seeing water leaking from several of the connections. After disassembling I turned the manifold upside down, started with the short pad and worked clockwise outside to inside making sure all pads were well seated into the manifold and there correct spacers. The hardest part was getting the long bolt back into the manifold hole and it wasn’t that bad. All in all this was a much easier task than working from the normal position and no leaks or DE back into my pool. As a side note, I almost purchased a new filter set at $100 plus.
Too much DE will also cause the DE in the pool issue as well.
Not sure what the number means - no one to ask as everyone who designed that filter is 6 ft under. From my experience you will be fine with eight scoops. Maybe you want to start to think about replacing that filter with a nice new modern cartridge filter. I bet that Anthony filter will bring about $50 at the scrap metal place ;) And you can sell your grids on Ebay for more $
That is rated by the manufacturer as a 25 sq ft DE filter. So you would only need 5 scoops of D.E. - I think there is probably too much D.E. in there if you put the entire bag in...
That sounds like a SMBW2024 D.E filter. I would add 4 or 5 scoops of D.E. - i take it the label has worn off identifying the filter size. That is a 24 sq ft D.E. filter.
Thanks so much for your videos. They're really helping as I try to keep this old pool alive, & fight the green & the mosquitoes. Being forced to learn mostly on my own, as I can't seem to get service folks to call me back. It's busy time f. that sector, I suppose. I want to get good at this stuff, & maybe even transition to a household chemicals regime eventually, but right now, I need guidance (or maybe it's hand-holding), even w. the help of your excellent videos. Anyway, thanks.
It is understandable that the consumer will not know this - the disclosure that Diatomaceous Earth is mixed with crystaline silica is listed very vaguely. The bag mentions that it contains crystaline silica in varying amounts per bag. Most retail sales associates who don't use this in the field never read the fine print. It should be listed on the front in large print and not in microscopic print but it is classified as an occupational hazard -i.e pool guys who use a ton of this stuff ;0
There's no obvious holes in them it's a purex idk what model can I email u pictures of it? And even if it has some leak can I still use it if I clean the DE out the pool?
email photos through my website: swimmingpoollearning.com. I will take a look at it for you.
You’re a gift to humanity
It's the fiberglass filter top. I wear long sleeves and it still get's in my skin. I try not to hug it too much ;)
Just saw this, nevertheless I felt something hurt my arms now!
Put 2 coats of Rustolem Hammered Metal paint applied by brush or roller from a can on the dome. Silver paint is perfect for hot climates.
Alright you wanted to thank you, you're just one of those people that's very easy to listen to. Lol. I got to the back washing portion of this and BAM, you answered my question. I've been dealing with a pool where I think even though I have a new air pump, the guy had been kind of screwing me over that was doing the servicing and he just wore it out too quickly by just not addressing the manifold that he broke and some other things, but anyway, I've been learning how this all works and trying to get it down and it looks as though I have an impeller shaft seal that's leaking and causing some air. Watching you gave me the confidence to not take ppl on their works, alone, and figuring out how it all works. & then repairing it myself! Thanks!
Thanks for your response to my other question, I have one more question. After the last filter service (grid out) I added 8 cans de. During the add, after 3rd can a brief puff of de came out of the SUCTION HOLES at the bottom of the pool. It stopped and thereafter functioned as normal. No de leaks. Any idea what would cause this unusual occurance? Thanks! I would guess about a qtr to a half CUP of de.
The navigator sucked it up. Pool clear next day.
One more, I noticed a couple of grids had the internal skeleton cracked but no holes yet. What BRAND do you like for Hayward. I now have Pleatco & they lasted maybe a few years.
:)
:)
Probably just some air in the line causing the DE to back up out the main drain line. Seen it happen. You can dilute the DE in 5 gallon bucket and slowly pour it in to prevent that in the future. I've used all brands and they basically are the same - Pleatco, Filbur and Unicel. Whichever is the lowest priced 😀
Thanks!
:)
I have taken over the care of a children's summer day camp pool. I am very confused about how much DE to use. The filter is an old stainless steel Purex Triton Nautilus Plus (NPS-72). Obviously it is a 72 Sq. ft. filter. The label on the filter says to add 11 lbs. of DE. however according to your video I should be adding about 14 lbs. The pool gets heavy use. It is 30x50 and holds about 37,000 gallons of water. Can you give me advice about how much DE to use? Thanks for all your videos, I have learned a lot!!
I usually will add 12 scoops to a 72 sq ft filter and in your case since it gets heavy use you will be backwashing it frequently - so after a good backwash add 5-6 scoops. I would say after the third backwash take it apart and clean it. You might not get 6 months between cleaning in a pool the big and used that much. Each scoop is actually 1/2 lbs. So you only need to add 6 lbs. Confused yet? - ;)
Ironically I have an account that was getting the fiberglass pool re-glazed and they wrapped the filter in kitchen plastic wrap to protect it. I left the plastic wrap on the top and it kept me from getting fiberglass shards in my arms when I cleaned it ;)
Is this a fun and easy job to do? :/ i was thinking of buying a pool route will i make good money doing it???
Figuring out how much DE to use
Start by noting the PSI reading on the filter with the pump running.
Mix 1/4 cup of DE with water in a bucket and pour that slowly into the skimmer. Remove the skimmer sock, if any, before adding DE.
Give the system about two minutes to stabilize.
Note the pressure on the filter and repeat the second and third steps until the pressure has gone up by one PSI. This will typically take around 1-2 cups of DE.
I've been fighting algae, so today I cleaned my 60 sq. ft. filters (also replaced two that had holes) and added 12 scoops of new DE (I hadn't seen your video yet). Notwithstanding all that cleaning and replacing, after running the pump for several hours, I checked back and the pressure had gone up all the way to the top of the gauge (30 lbs). I don't understand why cleaned or replaced grids would so quickly lead to such high pressure. I'm at wits end in dealing with this algae -- and now having pressure so high I had to shut the whole system down.
Just give the filter a good backwashing and add 4-5 more scoops of DE. The algae dust clogs up the DE filter grids very quickly as it coats the DE and doesn't allow water to flow through. If after backwashing the same thing happens you will need to clean the filter again. It is a process and you might need two or three cleanings until the algae dust is gone. Nothing to worry about - I see it all the time.
Swimming Pool Tips, Reviews & How To -MrDgvb1 Thanks for the tips. For some reason, my filter doesn't have the capability of being backwashed. So I guess I'll just have to clean it again. Funny thing is, I asked the store manager at Leslie's (where I bought two new grids yesterday) whether I'd have to clean the filters every couple of days while fighting algae, and she said no, the filter can handle a lot of algae before you need to clean it. I should know better than to ask them anything. Thanks again!
Swimming Pool Tips, Reviews & How To -MrDgvb1 By the way, thanks for the heads up about the carcinogenic properties of DE. I've just always tried not to breath it, but I think today I'll go to Lowe's and see about masks. Will the cheap paper kind do or does it have to be a full fledged gas mask type thing?
hi, great videos....so helpful.
i took apart my pentair 60 plus de filter and cleaned all grids....then put back together. no rips in grids....manifold good...etc.
put 6lbs of de as recommended. the question I have is only on the initial adding of de......I get a small amount of de back in...... is it normal to get some de back in pool ? a small amount came back in pool. once I vaccumed.... no more.
thanks
Normal in some cases. If it only happens on initial start up after a cleaning it is probably DE that went back down the suction line when you were taking it apart. Once pool turned on that DE came back in and out the return lines.
Thank you so much for the information. I am now confident about caring for my own filter. The simple instruction to determine the square footage of my filter in order to determine the proper amount of DE has eluded me until now. Thank you, thank you, thank you. Next I will search your videos to determine what amount to add (if any) after flushing or backwashing the filter. Big Smiles :)
This is HANDS DOWN the most helpful D.E. information. THANK YOU!
Do you just put the earth in the skimmer with the normal plug and basket?
Ryan Johnson I leave the basket in the skimmer. If you have a line plugged leave that in also.
Just send me a personal message. Or upload a video of your pool and post the link in a personal message and I would be glad to further assist you. You can load it as "unlisted" if you don't want the world to see it ;)
Two questions: Ques. 1) How long should should I let my 60 gal filter run, after I cleaned out my tank, cleaned the grids and added brand new Earth to the filter (10 cups as you suggested)? Ques. 2) You suggested once a month to run the backwash and add about two cups O' earth in the skimmer. Do I use the valve pressure gauge to ensure I have replaced enough earth?
For your size pool based on the photos you sent, probably 5-6 hours in the Summer should be enough for one full cycle. If the water looks clear and good you can try lowering the time down a bit more to save $$. Maybe 4-5 hours.
I only backwash when the pressure gets above 10 psi from when I cleaned it. So if after cleaning you are at 20 psi abnd after 2 months it goes to 30 psi - backwash it. Usually as a rule I add 4-5 scoops back in. There is no hard and fast rule but about half of the initial charge is fine. You just want some DE back in there. I try not to do more than 2 backwashes before I take it apart and clean it again.
Since your grids are old you might notice the pressure rising quicker. If so then new grids are in order in the near future.
So, you're putting DE powder in prior to backwashing, then you backwash; repeat? Or you're backwashing and clearing the canister (several times) and then adding your DE powder to complete the process?
Add DE after backwashing
No need to backwash if you plan take the filters apart and clean them! Then just add the DE after putting cleaned filter back together.
I just installed a new Heyward EC50 DE filter. I forgot to add the DE can I just add it now? I opened the pool and it has been shocked and chlorinated. is it ok to add DE now or is there a process to follow the filter has been running for 24 hours thanks
+Mark Lagravenis Add the DE now. Should have no issues.
Changing out the entire filter assembly today. DE keeps leaking in pool. Should I vacuum to waste all the DE at the bottom of the pool before I put in the new filter?
You can do that after.
I just joined a Pool Forum & they claim it works well. Only lasts until your next Backwash. Do you think it could hurt a Sand Filter?
Sounds like the pressure gauge is bad. It is like a $10 part. If the pool is flowing normally, then the gauge went bad. This happens all the time. I bet the gauge is pretty old since the filter itself is ancient ;)
Hey, Thanks for the videos, I clean the filter a purex triton 2000, took the screens out and washed them and after putting everything back together I added the DE but the NO pressure read on the gage, I opened the air valve until water shot out to make sure that all air went out but pressure only went up to 2 psi, this normal?? Any tips?? Thanks
Thank you for your video. I always feel that by going by the recommended amounts of D.E. on the package or even on the filter it is just a bit to much. Can you recommend how much D.E. I should use on a Pentair Quad 80 D.E. Filter? Much appreciated. I also liked your advice on backwashing for 1-1.5 minutes. Many others show 2-3 minutes and then repeating the process which really seems excessive. Can you also suggest the amount of D.E. for my Quad 80 to add after doing a backwash? Thanks again!
I did make a video on it but haven't put it up on my Channel yet. The recommended amounts from my experience out in the field are too much. Here is the video link for you on the amount for a Quad DE: ua-cam.com/video/C0hC88udxBY/v-deo.html
Thank you for this great video. I have a large public DE pool that is gravity fed. There is 100+ square feet of filter surface area in a pit. Should I follow your same guide; Saying it is 100 sqr ft of filter, then 17 to 20 scoops of DE?
Yes. That sounds about right. What kind of filter is it exactly? I wasn't quite tracking with you.
My filter is horizontal, its an old Anthony Pool filter, and the label on top of the tank reads " filter area" 45...I'm assuming that is the square footage. So I would think according to the DE add chart you give, since there is no 45 reading I would probably have to put in...8 or less?
What if the it shoots some DE out the jets? Everytime I do it no matter what
Indicates something wrong with the DE filter. What DE filter brand do you have? Ck the grids - usual suspect.
thanks for the vids by any chance are you NJ i have followed your videos but we are still cloudy and not able to swim when i opened the pool (inground) it was black to green muck scooped wheel barrels of muck out now dirt on bottom and still not fully clear need assist please
Question, every time I do a phosphate cleansing in my pool my DE filter gets clogged every week for months. Is that normal? What is normal for DE filter cleaning I’ve heard 3 months? My average is 2 or 3 weeks if I treat prostate then it’s every week. I know because I have no pressure in my system
Phosphate removers can clog your filter. Try cleaning the filter and then go with a PoolRX instead of the phosphate removers.
D.E. is mixed with crystaline silica. On bag: "Breathing crystaline silica dust [ingredient in D.E] over prolonged time ...Inhaled crystaline silica from occupational sources has been classified as carcinogenic to humans (group 1) by the International Agancy for Research of Cancer." According to the manufacturer once the D.E, gets wet the crystaline silica dust is inert, while it is dry and breathable it is a carcinogen.
This stuff in any amount in your lungs is bad, very bad...
I have an old and i mean old filtering system for an Anthony Pool. A veritcal tank. I just replaced ( and they were hard to find) 5 of the disc filters. When i turned on the filter and cranked the tank handle... a cloud of earth came pouring out of the spout in the pool. This has been a ongoing issue. I cannot vacum the pool because it dumps right back into the pool. I'm totaly frustrated. What could be causing this?
I am looking at this schematic: www.poolplaza.com/C-Anthony-Apollo-Filter-Parts.html
If all the grids are intact then check parts #12, 13, 14. #12 is the elbow - check for any cracks.
Not sure what part #13 does but if it is missing or damaged DE can leak from here. And last is #14 the air bleeder.
I would also double check the grids. Interesting thing about these filters is that even with ripped grids they seldom leak DE into the pool - at least from my experience.
If all those parts check out I wonder if the brass backwash is malfunctioning. Truthfully I haven't serviced one with a working backwash as they seize up over time.
I would have suggested a new filter vs new grids...
Swimming Pool Tips, Reviews & How To -MrDgvb1 Thanks for the quick reply. The schematic is for a different filter, ours lays lengthwise... yeah, its old, the filters grids are new. there is a valve attached to one of the pipes that comes from the tank . Not sure what its for. Maybe a backwash valve, i try shutting it but it turns and turns... never bottoming out. so maybe... just can't find information on this system. I'd love to get a new system but right now I can't afford one.
I have the blue scoop from Leslie's. A lot of people are saying it only holds ~.75 lb, not 1 lb.. I'm trying to figure out how many scoops I need after a backwash for a 60 sq. ft. Hayward. Your guidelines of 3 to 4 scoops assumes that 1 scoop is 1 lb., so I guess I should be adding closer to 5 scoops. Does that sound right to you?
The Leslie Scoop is the same as the on in this video. 1 scoop equals 1/2 lb of D.E. So 2 scoops equals 1 lb. When you charge your filter you will use 12 scoops which is 6 lbs. So recharging it with 5 scoops is fine, which would be 2.5 lbs. There is no exact science after a backwashing but the Rule of Thumb is to put 1/2 back in. Hope that isn't more confusing ;).
Swimming Pool Tips, Reviews & How To -MrDgvb1 Thanks for the reply. So are your guidelines for recharging (towards the end of the video) based on a 1/2 lb. or a 1 lb. scoop? If I'm understanding this correctly, you're using a blue 1/2 lb. scoop but the guidelines assume a 1 lb. scoop. Also, I was told that you should gradually taper off the amount you recharge after each backwash, since more and more DE is left in the filter over time. Is that what you recommend? Thanks again.
mxrphaseninety The numbers at the end are for a 1/2 lb scoop. I kept them low on purpose as I find that customers will usually over charge their filters. The low amount on a backwash recharge works perfectly fine. A lot of D.E. remains in the filter. I usually will backwash once, twice maybe before taking it apart. Backwashing is inefficient and yes over time more and more D.E. will build up in the filter. I switched to Perlite recently for all my filters.
I was told you can put small amounts of DE in a Sand Filter, up until the Pressure Increases by 1. Suppose to allow your Sand Filter to catch smaller particles of debris. What is your opinion on this? Thank you.
I have the same question. My Purex 4000 series filter says to put in 6lbs. It looks to be the same filter as the one you are showing here.
I have an OceanBlue branded DE scoop that says it is 1lb for each scoop. So I also would assume that 6lbs or 6 scoops is enough using this scoop I have.
The 1lb scoop I have looks to be the same size as yours. Makes me think that the Aladdin instructions are a bit off. Could it be dependent on the brand of DE?
Have you ever thought about Cellulose Fiber? My company here in Austin has a lot of D.E. filters that don't have a waste line that leads to the sewers. Most of them have a backwash hose that i extend to a corner of their yard, so it seems cellulose fiber would be better because it is biodegradable and safer for the environment. Have you ever tried using it?
Don't really use it myself but I suppose I can film a video test with it and then take it apart in 6 months to see how it does vs D.E. Technically D.E. is fine for the yard - it is the chlorine coming out of the pool from a backwashing that can kill the lawn & plants I rinse D.E. filter grids off in the grass all the time. Been doing it for several years with the only complaint coming from the gardeners ;)
Swimming Pool Tips, Reviews & How To -MrDgvb1
That would be really cool because i don't think anybody has done something like that yet. Also i wish we were worried about the grass dying but my problem and his problem is the fact he has 2 small children that play in the yard. I don't want it to have any effect on them especially if they breathe it in or something.
Aaron Ware Yes, that is an issue once the D.E. dries again. Supposedly it becomes inert after it is coated with dirt but I don't buy it. I've swapped out perfectly working D.E. filters on several of my accounts with cartridge filters for that very reason. Usually I won't mention that it can cause lung disease and has a cancer causing element in it - I focus on the mess factor and that cartridge filters are much cleaner. That usually does the trick. 9 out of 10 times the customer is also tired of all the D.E. in their yard. I guess the Trump Card is the fact that it is unsafe if you have to play it...
You didn’t mentioned size for American Titan filter. Is it 60 sq ft?
Yes, 60 sq ft
Hello. Looks like dead lagae or pollen is on the bottom of pool and everytime I vacumm it, it returns to pool. I can see the return pipe shoots green stuff.
its almost new cartridge. Its a signle cartrirdge filter. Adding some de powder would help better filteration?
With those small filters once they get full and with algae that is pretty quick - you will need to stop vacuuming and clean the cartridge. Also check to see if cartridge is seated correctly. DE won't help and may make it worse.
yes de is not intended for cartridge filters. Cartridge filters dont filter as fine as de; De will filter the smallest particles out of your pool down to 2-3 microns so i recommend to anyone that has "passing" problems to just get a good used or new DE filter with backwash will solve many of your problems remember if anything but clear water is coming out your jets then you have a filter issue either it is put together wrong, a piece has a hole or crack, or you have a cartridge filter, check the little tube on your cartridge filter if it doesnt have a screen on it, then that is your leak, its common on cartridge to have that screen break then u get problems you can just plug that little hole and you will be alright..
Hope you're still monitoring the video. I have a leak at the top of my filter where the pressure gauge screws in. This is my second gauge. Neither one ever seemed to give a true reading it seems. Of course I got both at P a P. I asked them last time if they carry a "heavy duty" or just a better grade gauge and all they offer is the lowest generic brand. Yours looked nice! LOL. Where can I get the right and better one? Mine is a Hayward and the threading comes out the back, not the bottom.
Thanks!
What model number is it? Are you using Teflon tape on the threads? There are also a few reasons why the pressure gauge gives a false reading. I can go over them if you want - is your pressure reading high or low all the time?
Swimming Pool Tips, Reviews & How To -MrDgvb1
Hey...Thanks for replying. Yes, I did use teflon tape. tried winding both ways :(
To me, the pressure reading always seemed low. I always attribute it to being such a basic, crappy gauge. Of course without a backup way to measure who knows? I believe the model is DE4820.
John Ferguson I will look into it for you and get back to you over the weekend. You tank lid might be stripped - which of course is not good. But let me check your filter model and check with my Hayward Rep.
Swimming Pool Tips, Reviews & How To -MrDgvb1
Again, thank you for your help. When you say, the tank lid may be stripped. do you mean right where the pressure gauge screws in? By the way, the gauge "reads" about 25lbs. We backwash every three months.
John Ferguson The gauge should move up about 10 psi as the filter gets dirty. Especially a D.E. filter. Cartridge filters get less movement in the gauge.You can order a factory gauge online I suppose unless the price is dramatically higher than Pinch A Penny. Try putting some waterproof silicone on the threads along with Teflon tape. The top of some filters get stripped out as they get older. If it is not a giant leak the silicone may stop it.
could you do a review of D.E. vs the synthetic stuff?
Hi, I have a Sta-rite model PLD 50. Its reads on label - D.E Pre-coat 6 LBs (2.7 KG); 30 SQ FT. How many coffee cans scoops do I put in? I already started the filter with (opening pool) with 2 1/2 coffee cans. Is that enough or to much? I have an above ground pool. Thank you.
PRAYERWARRIORKING 6 lbs would by 12 lbs coffee cans since DE when it is dry is half it's weight. So each 1 lbs coffee can is 1/2 lbs of DE. So for 6 lbs you will need 12 cans. 10 cans would be sufficient.
If there’s no skimmer? Is it okay to add the d.e powder in the basket strainer?
yes
at what point do you throw in the towel and buy a new DE filter? i've been having problems with my ec40 not filtering my pool properly. The DE is coming back into my pool and its creating a coating at the top.
johnvito marinelli If your tired of replacing grids and dealing with DE then switching to a cartridge filter is the way to go. I recommend the larger size cartridge filters like the Pentair Clean & clear 320 or 420 for pools over 10,000 gallons. I believe yours is a bump filter so your pool is not to large?
Hiw do you know the square footage of a filter? I bought a house with a pool and no information tongo along with it.
You can open the lid and measure the grides vertically. Then enter the size on Google and it will give you the sq ft. size
Interesting: my Hayward DE3620 owners manual says it takes 4.5 lbs of DE for my filter. I also have a 1 pound scoop, so that would be 4.5 scoops. where did you get the full scoop per 5 sq.ft. (7 scoops)? great videos by the way - thanks!
Each 1 lbs scoop of dry DE is actually 1/2 lbs. So 2 scoops equals 1 lbs. So in your case it would take 9 scoops for 4.5 lbs of DE to recharge your filter per manufacturer specs.
my Hayward scoop says "contains 1 lb. of DE when filled level with top" - and doesn't your scoop say 1 lb? - so you're saying it's not a lbs., but a half pound, and my 3620 only really takes 6 scoops? just getting clarification - thanks!
Yes, 6 scoops will do it. That will be 3 lbs of DE. Enough for your size filter.
Can I go back a couple of days later and add a couple of scoops is that kosher?
That is fine.
Clorox makes a DE Filter Aid and it says it can be added to a sand filter. Any opinions on this?
You can add a little DE to a sand filter. Maybe 1lbs to help. No more than that.
@@SPL Thanks. How often would I need to do that? Will it be flushed out every time I backwash?
Haven't run the DE filter for a few days, will DE powder run to the swimming pool when I run it again? Thank you
no, it shouldn't
Thank you !
I have installed a new JDE60 60sq ft DE in - Ground Filter, and new pump. the recommended add 7 pounds of DE powder, but the installer said that it must add 12 pounds for the first time, Now I have lots of DE powder bottom of my pool, so you think it is too much DE powder or is something else ? What I should do? Many thanks !
One question, re. a Pentair Nautilus FNS 60: A pool store guy recommended Jack's Magic Filter Fiber Stuff as DE alternative. It's touted to require "less than half the amount" of DE, to "extend filter runs," to reduce filter clogging, be biodegradable, non toxic, and more "environmentally friendly." Had any experience w. this? I bought it, to use re-starting things after disassembling & cleaning the filter, but then was talked out of using it by a friend, who knows more than I (no expert, tho).
I took out my grids and checked them. No tears at all. I get DE back into the pool. I do notice when my filter primes bubbles come out the jets
I would check the manifold on top carefully.
Hello.
Each time I put DE in m pool the DE goes at the bottom of the pool.
What do you think the problem is?
And I do I know if I have a leak in the filter ,I checked my cartridges and they look fine...
My pool is getting greener more often and I don't know why ,the level of Florine is fine the filter is clean...
Thank's for reading me.
Alain
What brand and model filter do you have? Sounds like there is a D.E. leak somewhere . The fact that the chlorine is at a good level and the pool is getting green means the filter has a leak. Let me know the filter info and I can further help.
Bet it's the check valve inside the filter. Easy to change, pull 15 bolts from (Hayward) filter, see clip holding inlet pipe ...check valve is inside.
So While backwashing you just let it run for 1.5 minutes, and that's good enough? I normally run about 30 seconds, switch back to filtrations, for 30 seconds, to agitate more DE, when I do that, I notice I get out more dirty DE upon cycling it, are you saying that isn't needed?
You can do that but it is not really necessary in most cases. I find that by doing that you can weaken the grids. You do get more dirt that way.
@@SPL This most definitely be true, I'm normally sure I'm not tightening my grids too tight, and then when I have to open to do a full cleaning, I'll notice a grid is cracked, but normally only on the edges. Also thanks for the quick response, that alone made this video go from a subject I just looked up to a new subscription!
Thanks Budd! 👍
I've seen the recommendation for 12 scoops for a 60 sq. ft. filter...My filter documentation says 6 scoops/pounds....Have the newer models changed or something requiring less....somewhat confused.
Its a Pentair FNS Plus
Thank you for your videos. I have a question. I have a Hayward EC65 bump filter that requires as per manual 6 lbs of DE. The filter is 27sq. Your video instructions shows Aladdin scoop states 5 sq = 1 scoop for vertical filters and 1 scoop for 7 1/2 sq for bump filters, (which I have). My question is if the manual of the filter states 6 lbs, am I adding 6 scoops? or as your video calculation 3.6 scoops (3.6x 7.5= 27). My pool is a 16x32 app 21000 gallons. I run a Hayward variable speed pump usually on low speed for 18 hours. I sometimes find my water cloudy too. Try to keep my chemicals in line with pool calculator. Do you think if I upgrade my filter to Pentair Quad 60 will help (twice amount coverage). I like a filter comparable to my variable speed motor high efficiency. Thank again for your help and service.
6 lbs would be 12 scoops - too much for your little filter. Upgrading the filter will help for sure. When you say low speed all day what RPM are you running at? The cloudy water could be due to poor circulation also.
Thank you. Yes I increased my filter time seems to correct the cloudiness. I now correctly calculated my size of pool now with at least one turn over a day. Before I was shy of that. I now do Low speed for 1500 rmp 20 GPM went from 12 hours to 20 hours per day. Fix the problem. If I understand right one scoop of aladdin is 1 pound?. I going to upgrade my filter too, which I picked up from a friend to a newer hayward grid 36 sq. no more bumping, and its was for free. Thank you.
How do you know the square footage of your filter? I would think you'd measure it in cubic feet, wouldn't you?
We have a Hayward Perflex EC-50AC filter for ours, and my brother managed to waste almost an entire bag of DE in three days, and I was wondering if that was normal.
just clean my filter have a pld70 from sta rite after the 5 scoop I saw some DE coming from my return line. its put out like for 2 minutes then stop making my pool almost white I did have it running and it clears up in 2 hours I inspect the filter no problem found .when I clean it . it this normal ??
***** Sometimes a small amount of DE will enter the line where the modular cartridge is sitting. This happens on the Pentair Quad DE filters sometimes when I clean those. Even a small amount of DE looks like a ton when it hits the pool water. It should settle down to the bottom and you can vacuum it out. If the filter is running clear now that was what happened.
Swimming Pool Tips, Reviews & How To -MrDgvb1
I was paranoid lmao thank you I have seen all your video keep the good work learn a lot form you
What do you do if there is a DE leak in the return valves?
Take the filter apart and remove the top manifold and inspect all of the grids for tears. Look also for a leak on the manifold and on the thin air bleeder tube.
@@SPL thanks for the quick response
Love your videos. I would like to know though, does DE make you itch? Or is it the fiberglass filter dome?
Its the Dome! Believe me
I know this is old, but for others who may stumble across it - like Bob said it is the dome! Don't touch the dome. I learned this the hard way. And if you did get it on you, rinse in the shower then scrub with bar soap 🧼 not liquid; helps tremendously.
Repaint the dome with Rustolem Hammered Metal paints applied by brush or roller from a can. Use two coats yo lovk in the fibers Silver works great in hotter climates.
This is my first time using this product. So I added 3 scoops of the DE, and my hot tube became cloudy. What does this mean?
You have a DE leak in your filter
I have a new pool that just got concrete. The pool water was extremely dirty when the concrete was finished but was cleaned by one of the guys. When I swim I can see small particles floating in the water. Some I can tell are from the styrofoam and some look like tiny pieces of pool noodle. Is there a chance that I didn't put enough DE in my filter after I backwashed it last month? I put in 8 32oz cups like the pool man said but I didn't pack it down. It was loose.
Dena Dendy Do you also have a Salt Water System?
The D.E. filter will pick up very tiny particles regardless if the grids are heavy or lightly coated as long as there is D.E. in the filter itself. There would be an overall clarity problem if the D.E. filter was low on D.E. and you wouldn't notice large debris floating in the pool per say.
Swimming Pool Tips, Reviews & How To -MrDgvb1 Yes, it is a salt system. Should I add some water clarifier?
Dena Dendy I am going to say the particles you see are from the salt cell reversing. Especially Common with the Pentair salt cells. When the salt cell reverses it blows back lots of particles and since it comes after the filter they go right into the pool via the return line. Try using a bottle of this to see if the blow back is reduced: www.amazon.com/Purple-Stuff-Size-32-Ounce/dp/B001EBEOGU/ref=sr_1_1?s=lawn-garden&ie=UTF8&qid=1438655563&sr=1-1&keywords=jack%27s+magic+purple++stuff
My Hayward filter is 72 sqf. It would need 14 scoops to charge from new after total cleaning. How much would you recommend to add after back-washing.
gene arguelles I would say 5 scoops would be sufficient.
Thanks
I have and old Premier would you still recommend 8 Aladdin cups? I think I was told 5 lbs. On a 30 gallon pool that uses 48sqft grids.
Yes, that will work.
I pour my de in a bucket water make a slurry and pouring slowly in skimmer . Coats grid evenly better
Another great video. Thanks for sharing! I'm learning so much from you! Thanks.
Thanks for all your Tips, please help me with an High Pressure issue in my filter. It is a new Pentair 48. I clean the panels put the DE and the initial pressure reading is 27. Is that normal ?
Usually not unless there is some back pressure from the return lines. I have some pools that have high starting pressure. If the flow is good it may not be an issue you need to worry about. Usually it is around 20 PSI after cleaning.
I just got installed my filter Jacuzzi J-DEQ80 it is a 80 SQF and the owner manual states that only needs 8 pounds. Does that sounds right to you?
It is an 80 sq ft filter. So technically that calls for 16 of these scoops. I always go a little lighter myself so try 12-14 scoops
hello- i had a rip in my d.e. filter scrren and did not know it and pool bottom with the powder. i can not get new filter screan yet. what can i do to clean bottom of pool? thanks!
+Bill & Denisse Myrie Not much unless you want to invest in a portable pump for a couple hundred dollars. Just replace the grid and manually vacuum the D.E. up once you put the filter back together. It won't do any harm sitting on the bottom for a few days.
Can I use that for my cartridge filter
No, only for DE
The outside label on my Pentair DE FNS-Plus 60 Filter it says to use 6lbs of DE. All the bags/boxes of DE I have seen say to use a lot more than that, 9lbs or more. That should equate to 6 scoops as I measured a full scoop and it comes out to 1lb per scoop.
6 lbs is sufficient. I use a quart size scoop in the video and 2 scoops equals 1 lbs.
Your scoop looks similar to mine (may be smaller) which I purchased from Leslie's. I weighed it on a postal scale and it was pretty much one pound. The sales guy at Leslie's told me it was a 1/2 pound scoop where others online said it was a 1 pound scoop. I had to test it myself to make sure. UPDATE: I just went outside and re-measured a scoop. Without taping it down to get all the air out just let it go over the top a little it will be one pound. See link: photos.google.com/share/AF1QipPwCLRhDNlavFfe2lzK6L1dR25Nq6Zbyj8As2FS7AEX_8lq6gQwqu7MlhVdrgaSqg?key=N2JidnV3WlFlX2VvNTJpaHNqNThtaHVNSzI2dl9B
Not sure if is the same as mine - could be a 1 lbs scoop - I know they make them - any marking on the bottom?
In my link above I added the bottom of my scoop. No labels other than Leslie's sticker. I originally commented only because these bags/boxes of DE say to use more than what the filter manufacturer says to use. Though it may be fine it throws money down the drain (or skimmer :-)) if the required amount is pounds less.
Hey, what gas mask would you recommend using? Thx
I use this one on my route: 3M Full Facepiece Reusable Respirator 6700
you can see it in this video: ua-cam.com/video/xcJbMnCyJ_E/v-deo.html
you buy the filters separately depending on what you need - I went for the top of the line filters.
Awesome video! Thank you so much-this video really helped to clarify info for me! Good job!!!
need help! I am a new pool owner and I did the mistake of adding DE EARTH to a hayward cartridge filter. once I realized that I wasn't supposed to do this I cleaned the cartlidges, but I an now seeing some DE in my pool and the water is cloudy. What are my options ? thank you
Let it settle and then vacuum it up. Then take the filter apart and hose off the cartridges. You should be fine.
Thank you. I will try that
Hi,
When I run the filter the DE powder goes back to the pool. I uninstalled, open the whole thing, clean it, inspected, there;s no rips on the grids anywhere (it's a new set of grids just bought last year). What do I do wrong? what's might be a problem? Thank you for your help.
Putting in too much D.E. Guideline is 1 lb. per 10 square feet
I’m confuse. Doesn’t the label tell you how many scoops of DE to put in the skimmer?
It will tell you the pounds of DE to add. The smaller scooper is 1/2 of DE.
@@SPLso what’s the size scooper do you use? I use a 1LB scoop so will this calculation change ? Pls help me ?
Probably have a ripped grid or two. Normal with age.
How do you know the size of filter?
Should be a label on the filter.
@@SPL Thank you for the reply. It has been baked off by the sun
For those without a dedicated DE measuring cup: 1 lb of DE by weight = 48 oz in (loose) volume: 6 cups, 3 pints, or 1-1/2 quarts
There are rules-of-thumb, but the best rule is to follow what the filter manufacturer says. I have a Hayward ec65a whose filter area is 27 sq ft. If you use the divide-by-6 rule, that’s 4-1/2 lbs; if you use the divide-by-7 rule, that’s just under 4 lbs. However, the manufacturer insists on 6 lbs. So who’s right? The manufacturer, always.
That said, after backwashing, best to use 75% to 80% of that total, which is really for a filter completely cleared of all DE. So in this case, it comes down to 4.5 to 4.8 lbs, which is close to the divide-by-6 rule. Voila!
After adding the De do we always have to do backwashing ?
@@amysalvador4460 it’s the opposite: After backwashing, you always add about 80% of the requirement of a completely cleaned out filter.
If my filter takes 8 skoops of DE. After I backwash do I have to put another 8 skoops in or does some DE remain?
Andrew Attard 4 scoops would be fine. Figure you lose about half the DE in a backwash.
Thank you for information forwarded you to my daughter and hopefully this and the other one about cleaning the filter help her
Can this be used for 18ft round pool
If you mean a DE filter - for sure.
@@SPL ok I have a sand filter and hate it
I have the pentair fns plus 36sqft and on it I think it says to add 3.5 pounds will adding 6lbs damage it
If you mean six of these scoops no - that is about 3.5 lbs. Each scoop of dry DE with the scooper in the video is 1/2 lb of DE. So two scoops equal 1 lb of DE. 6 scoops is 3 lbs.