Under gravel Filter, Pond Maintenance, My favorite Pond To Build - Ask T.P.D. Show 19
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- Опубліковано 9 кві 2015
- Get an introduction to under gravel filter grid technology in pond design, learn some insights into maintaining ponds and my favorite style of pond construction in today’s episode. Learn from our experiences in the field for the last two decades. I talk about the maintenance requirements of Under gravel suction grids and what specific pond construction style motivates me. You ask Questions, and I'll answer them, maybe even on the show.
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This reminds me of 40 years ago and my first pond and building the in pond gravel filter. I remember we used a form of irrigation pipe purchased from our local irrigation company. It was about 2 inch pipe and full of small holes and then we'd connect it to a central heating pump outside the pond but bellow water level in a specially dug hole. I remember when it had matured it did a fantastic job.
Love the video's.
Terry.
Eric,
We had garden snakes one year during a drought and they we kept finding the Koi outside of the pond. We did not know at that time that there was a snake issue. One day we were out having coffee and we saw what was happening. The snakes were in the water fall area and was amazed to see that the snakes were almost acting like vipers, striking the fish as they swam by. We were in the process of building our 1000 gal pond on the other side of our pool, and had to hurry up and put in the liner, to get the fish out of there. Had this happen on the larger pond....they also may have wound up in the pool. I too am amazed that the fish survived.
Have a wonderful day and thank you for all of your time and efforts to help us all!
What an amazing story! Thank you so much for watching!
Great show. You rock Eric!
lora lee gelles Thank you Lora Lee!!!!
24" raised pond and 6' of gap = one hell of a leap!!
Hello ponddigger, congrats on your wonderful videos. I have a question that never gets discussed. How do we calculate the correct amount of water that should travel through a bog filter per hour? I am planning to build my pond with a surface area of about 600 sqft and depth of around 6 feet. I want to have a very large bog of about the same size of the pond approx 500sqft. I will have about 5-10 koi fish. Also the bottom of the pond will have gravel and water will pumped through the gravel up flow. I would like to know how how much water per hour I should pump through the pond and how much through the up flow system on bottom of the pond. I never found anybody that discussed this topic....glad to hear your input.
thank you very much eric appreciate that.
You Bet!
Hi, Love your videos......Looking to build a 30,000 gallon pond in Canada with only 3 carp at 30lbs each and was looking to put in a in-gravel fillter at the bottom.....how deep should the gravel be? and what pump size do I need? Thanks Paul
Hi...I love the videos, by the way. When it comes to instruction, I think they are some of the clearest and as a complete novice that is about to build their own pond, they have been invaluable. I've inherited a pond that has been poorly constructed so I'm in the process of clearing it out and re-digging it and sorting out the filtration. I would like to add an under gravel suction grid to the pond. I would also like to build an active bog filter but I don't think I'll be able to. My question is you mentioned that the water should pass through the gravel once an hour so how do you calculate that? I have an existing Blagdon 3600 air pump that has a max flow rate of 3600 ltr/h (792 gal /hr), and the pond will be about 15,000 ltrs (3300 gals), so will I need to buy a new air pump or is this sufficient? Any suggestions will be gratefully received. Take care.
how do you clean the undergravel filtration system? it has been years and feel that the gravel needs a good cleaning. thanks
I have a large natural pond that is 25x35x5' and a waterfall.The submersible pump is stirring up the black sand and muck and the small filtration pressurized filter is not doing a good job. My rocks are dirty. What filtration should I install.? I am thinking of driving a well and let that feed the pond and waterfall for the filtration.Please let me know what you think.
I actually have had heron pick my fish up and when they were too big drop them so maybe that's what happened 😉
How do you calculate how many holes to drill in the suction grid of the under gravel filter? Do you have a formula?
I have a question about using bog filters why are they not used too much by u guys do they work in big ponds i do planted tanks and the idea of bogs for ponds sounds interesting what can u recomend
We have a koi named Lazarus because he jumped out of the pond and had to have been out of the water for at least 3 hour's. Got home found him dry and mostly stiff put him in the water swished him around a bit and he moved a bit moved him back and forth for a few minutes and then he was fine. We'll swimming drunk but alive 2 years later has grown to 14 inches would never have a clue anything was ever wrong
Hi I live in Pensacola Florida and I have a question I’m putting in a 5 gallon filter ration system for my pond does the water coming out of the pond need to come up from the filter or down to the filter
just like to ask.what will happened to the sludge stuck in the bottom gravel of the pond?are the sludge will naturally gone and decomposed?
Hi pond digger i been building ponds out here in the inland empire since 2001 most if my work is in rancho cucamonga . my new costomers are into the viewing window there is only one guy i can find that builds the fram mr koi out of uk i have to wait 6 weeks all the time is there a local builder of the koi windows. I buy all my materials at mistic koi.
I have a problem with string algae every spring in my 700 gallon fish pond and have to use chemicals like algae fix to kill it so the filter can remove it . Is there a better solution than chemicals for this type of algae?? I use a large filter with mechanical and bio filtering. My setting is full sun, with both koi and goldfish and water plants like water iris and Lilly pads. Also has a 2500 gph pump for a waterfall. Any help would be appreciated.
What or how do you clean the pea gravel for a under gravel filtration system, used to pay a company to do it every year, but they stopped doing that maintenance.is there a machine that I can buy to do it myself? Thanks
should i use small rocks on the bottom of mr concrete pond?
I been doing pond maintnence for 6yrs now. Ive noticed Kois are quite the jumpers. if they sence a near by body of water. they will jump to it. seen it more than once.
is there any chance you could do a full feature on a undergravel suction grid as I am in the design stages of building one for my own pond, before I get a kikokuryu and hi utsuri :) keep the great videos and koi discussions coming.
We do have plans of shooting an Under Gravel Suction Grid video but it will be awhile before we start uploading videos. My UGSG book is closer to completion and will release this year. email me and we can help you along the way. eric@theponddigger.com
Eric I love your videos!! When are you going to do ug grid how to video?
***** Jim, that is a fantastic question! We do have plans to film a UG grid tutorial video but not in the immediate future. Stay tuned as it will be a fun video!
The Koi more than likely jumped from the pond and, considering that they are closely descended from Carp, either landed directly into the pool or landed in the grass near the path and flopped into the pool. How it survived the pools WATER, however, will remain a mystery to me!
+Leslie Kite What an amazing story, right? The chlorine levels must have been VERY low in the pool. Good thing for the koi the pool guy was SLIPPING on his job!
Very lucky little fish indeed!
The koi got in the pool when some sort or larger bird like a hawk or some thing like that tryed to take the koi and some how lost its hold on the koi maybe the koi wus thrasing around or some thig and wile trying to fly off with it ..it droped the koi and it just hapend to be over or real close to the pool when it hapend
Eric, Assuming the pond water level was high at the time, I think the koi jumped out and wiggle-flapped 6 feet to the pool! -Al
enanoaL That would be my guess too. If so, the little bit of chlorine in the pool probably disinfected any cuts/micro-cuts and helped save the fish's life. I'm hoping the owner had some of the electrolight/slimy* stuff to put on the gills.
*Technical term for the stuff that I can't remember what it's really called! :D
What Eric, T.P.D., fail to tell everyone is the KOI was an Olympic diving champion. So, I will tell you my theory on how the KOI ended up in the pool. The pond had a diving board and ladder installed for the #SHOWKOI to practice for the 2016 Olympic diving competition. When the KOI was on the diving board he noticed the dog was watching. The #SHOWKOI knew the distance was 6 feet between the pond and pool so without hesitation, with the dog between the pond and pool, the KOI leaped into the air, off the diving board, in a pike position, over the dog, and executed the perfect 3 ½ pike dive into the pool. The dog was so amazed he applauded (barked) with excitement which alerted the lady inside the home. The lady exited the house to find the #SHOWKOI inside the pool. The End!(LOL)
My theory...... I think the koi was aided (assume it wasn't the family dog but by some other land creature or bird) out of the pond or it was fleeing the land creature or bird and jumped out of the pond. The dog came just in time to chase the land creature or bird away. Then the dog helped the koi to the nearest water (pool). Then the dog barked to get help for its koi friend since he knew the pool wasn't where koi should be.
D S Koi Love this one!
Brilliant theory D S Koi !
I'd hope there are low chlorine lvls in the pond lol it was curious if other waters
I think that this is simple matter, the fish in question had made a big leap luckily into the direction of the pool (if not, it just leap along longest side of the pond) and so the Koi made it into the pool in that one big leap.
I have never witness it but I assume that a koi can leap higher and over a man head and can cover a long distance.
Also you didn't give much info on the length or depth of the pond or size of the koi.
I think that if the koi was wounded, you would have already told us, as in the end the KOI HAVE SURVIVE such adventure.
Or in more story-wise, this may have happen a bit like what 'D S Koi' said.
Hope that you will give us your theory about it too.
The koi went into the pool because it wanted to learn how to swim!
How would you tie a suction grid system to the pump? Thru the liner near the bottom? What kind of fitting would you use if so? Into a helix skimmer? Very interested in a low maintenance pond in the near future.
My favorite way is airlift suction grid or external pump connection but it can be connected to the Helix Pond Skimmer with a penetration at 33" deep. Airlift or submersible pump on stand pipes requires NO liner penetration. External pumps can be plumbed over the top of the liner without a penetration in the liner or down below water level if you don't mind going through the liner.
Can you guide me on where I can get more detailed information on these systems. I would like to keep all the plumbing from being visible if possible. Also wondering what kind of fitting I would use to go through the liner below water level.
did the dog grab the koi from the pond and spit it into the pool? cant think of any other way unless koi can jump
Eric I have question for you other that your line of filter system what type and brand of filter would you say is a good koi pond filter I know of the nexus but what else is out there that u would recommend I have a gc tek alpha one and it works very well
50f150 There are so many great filters that will get the job done. The trick is to maintain the filters. Manage the water and the koi will manage themselves.
You mention installing these. Do you have any links to your videos to show this?
+Shane Anderson Great question Shane! We will be filming an UnderGravel Suction Grid installation this fall! Stay Tuned!
ThePondDigger Are you going to install the Helix Pond Design grid system?
so far I have got from you is good question ....................
:(
57chevy350 We filmed an episode with your question a couple weeks ago! Be patient my friend.....It will likely air next week.
So is your under gravel system just a grid of pvc with holes drilled into it. covered with gravel and hooked to a pump? Just like a aquarium. I think I like this idea... I would have never thought of that. Being a DIYer this sounds easy. Maybe hooked to a 55g floating media container. (fluidized filter K1) Someday I will have my African pond. But I might have to move to Florida first..
TheMFLAV African Cichlid Ponds RULE! We have a pond for a client in Long Beach California that currently has a group of P. Saulosi mobbing around in the pond! We're gonna have to make up a fantastic fish trap before winter!
Awesome!! I revisited the patio bog pond from 13 last night. I think I could do something like that and have africans out there. PH might be tough but I have had good luck with a little lower ph. Then bring them in for the winter..
I'll be glad to tell you. That the last time that happened to me. I found one of my koi fish 12 feet away from my pond. sad to say he was dead. while I was at work my car jumped out and flopped away 12 feet from the pond. how do I know? My camera caught it all
+Rolo Ojeda WOW. Thanks for sharing
I think it ether jumped out or a crane or egret got it and dropped it in the pool.
Britt Pereira me too
The koi jumped out of his pond and then flopped around, sensing water in the direction of the swimming pool. He worked his way over to the new water source...Viola!
Fred Stewart Good!
you said koi or eco. Does that mean the koi pond can not use eco system. what is best filtration system for koi. I'm thinking ab5put using bog
Dedicated koi ponds and eco system ponds typically filtered differently with different maintenance routines. Bog Filtration is quite effective
The koi got scared and jumped out the pond and keep jumping and jumping and lucky for the koi I guess there was 1 the pool and 2 mans best friend to let her know what's going on .
It was a butterfly koi 😎
I'm with econerd, bird or prey dropped it right after it picked it up.
Before we try and guess as to how the koi found itself in the family swimming pool, we should first understand if there are other koi jumping back in the pond. When you see your Koi jump, it most likely means that something is bothering them and it is usually a water quality issue or a parasite. In most cases, fish jump for all of the same reasons they might flash. So please… the owner should first check for other fish jumping and flashing and if this is the case… look for parasites or some other water quality issues.
Once the fish jumped out of the pond… I should think it was only dumb luck he ended up alive and well in the swimming pool. However, people should also realize that if this happens, especially on a day that isn’t really hot outside, koi have been known to survive for up to an hour out of the water. They’re not like human beings where we would die without air after just five minutes. Sometimes I’ll have to sedate a fish with oil of clove to work on an ulcer or repair an open wound… and it’s not uncommon to have the fish out of the water under sedation for 10 minutes. Under the right conditions… a koi can live much longer than you think out of the water (but please… don’t test us on this fact… just take our word for it.)
As an aside… there are studies that have found that some fish can “sense” larger bodies of water if they’re very close by. And some species have been known to try and move from a smaller body of water to the larger one. Who knows… maybe koi can do the same.
***** On a side note when a koi is sedated and out of water for a prolonged period of time, a small airline sized tube should be flowing water over the gills of the koi while the vet performs any necessary procedures. I assisted Dr. Eric Johnson with this back in 2006. It was an amazing experience!
ThePondDigger That's a fantastic idea, Eric. I've had to work on dozens of sedated koi from the Hanover Koi Farm in Hanover PA. I've always been concerned about my taking too long to apply a patch on ulcers or doing detailed inspections and scrapings. I'll give it a try.
also what too do ?
57chevy350 :)
Probably a bird. I doubt it jumped since there is no reason for it to jump.
I have a story around this so I tell it to you !
When I reconstructed my pond and filled it up with water again I had all my fishes jumping from the new pond to the old. There is a level distance between the two (connected) ponds and I had to stop filling water since it was really late at night. At the time I stopped filling water the water was streaming from the old pond to the new pond much like a waterfall. The water between the ponds was much to shallow to be able to swim in it. The filtration pump pumped water from the new pond and through the filtration system and a build waterfall the water was put back in the old pond. Therefore the level distance between the ponds became a new natural waterfall.
Since the new pond is much deeper all the fishes was placed in the new pond wile filling up. Anyways when I woke up in the morning the day after, all the fishes had jumped through the naturally created waterfall into the old pond (approx 1 meter). My first thought was - "lucky them it was enough water in the old pond" because there could have been no way for them to know that.
TORE ANDERSSON Thank you for the story! It's fantastic!
ok so my 3erd time asking this if I live in A RAIN SOCKED AREA what to do under pond drain so your liner wont lift and what to do .........................................................
57chevy350 Next week it airs... It's a great question.
cool
Like a snake head fish, it crawled... Not really... Koi long-jumper? I don't know!
I'm so sad!!! I accidentally killed our only koi fish yesterday, or at least I think so! So anyway, yesterday, I realized that the water level in our pond was really low! So low that it was only a little puddle. So then, only being 12 years old, I told my mom that I would fill the pond up. I told my dad that I was going to fill up the pond, and he thought I was responsible enough. So anyways, this morning, my dad woke me up and told me that I had KILLED the koi fish, and that I had left the water running, and it supposedly overflowed onto the wires for the waterfall and ELECTROCUTED THE FISH!!!! I'm still quite curious if the fish was killed from electrocution, or if it was killed from the shock of running water for about 12 hours! THE POND LOOKS LIKE A LAKE NOW! I was so embarrassed! R.I.P Rosie The Koi :(
Failed alien abduction of the koi?
+Beastall 78 That's a good one! I love it!
It depends could a predator have caught the fish and then dropped it and it flip flopped until it landed in the pond .The dog could have scared the predator away .
The Koi might of got snagged by a bird and dropped into the pool or jumped out of the pond and squirmed into the pool.
probably a bird of prey or something picked up the koi with the intention of eating it, but then dropped it again, lucky for the fish, into the pool.
econerd first thing that crossed my mind.
econerd That's what thought as well.
maybe her koi pond is just near the pool and the koi just simply jumped :)
James Mangapis Good thought
Koi can jump pretty far....have seen this with my own fish.
Lindsay Johnson This is true!
predator? or.. jumped, flopped, and coincidentally ended up there..
if you answer this you will grow .
57chevy350 It's coming I promise!