Thank you. You are the only person (besides myself ) to add a pre filter to the hood. This is such a critical part of a flow hood to remove large air particles and extend the life of the expensive Hepa filter. I also like that you show us the math to do the proper flow calculations, this is where I was struggling. So, in the end, I got a stronger fan and added a motor control knob to adjust the flow of the air. Great tutorial!
Just starting out with cultivating mushrooms myself..I'm never going to make this but watching you is inspiring.. so bright and bubbly. Your enthusiasm is infectious.
Greetings, Ashley. am proud owner of your monotub and excited to follow along with your videos all along the way. You must be a biology math science genius. Brilliant and love your mailing inserts. What an adventure. as a nurse, I fully appreciate the sterility and your approach to achieve. best wishes, Polly Zehnder-Swader
I broke down my 6ft labconco because it was just too damn large, kept the furnace blowers and other parts and went looking for a good build video and re-found your video! Two friends ended up using your vid to make hoods, one for fungi and the other for metronomy!
I made one mostly like this. I used same filter but had a larger fan I already had. I use it on low & made little feet to raise up & let some air bleed off before the big box. Of course it has 2 pre-filters. But the biggest thing I did different was to bring the bottom & side boards out maybe 15-18 inches for a workspace & added a piece of glass on top that I can shine a light through. It's pretty damn huge but functions great. Only downside is it needs 220v outlet & not portable at all. I wish I had a small one to for the apartment for temp use.
I really like this design. I recently found a local source for foam PVC. I find this to be a better alternative than wood, being completely plastic, water-proof, anit-microbial, lighter and cheaper. I needed to buy special cutting discs and whatnot for cutting plastic, but overall I think it was worth it.
New to this hobby , can't wait to get my first set up ! It's all in the mail lol. Anyways I thank you for sharing your knowledge with us new people. It's literally invaluable.
This was 7 mos ago. I'm wondering how it's going? All my supplies are in the mail right now! Anything you've run into that you wish you'd known beforehand? Any tips?
Hi, I like your approach and explanation to derive the filter curve. I did in a slightly different manner: as the Flow rate through the Prefilter and Hepa must be the same (they are in series, IN=OUT), the total resistance of the system should be computed considering the HEPA filter nominal FR. Then for each filter, the pressure drop is given for an initial phase, working phase and final state. So in principle 3 curves could be derived, but the one we are interested in is the working phase. Thank you so much for this. Giovanni
Would like to help out, those dayton blowers are mighty expensive and move significantly to pressure drop and require these deep calculations. Centrifugal blowers. That look like flying saucers often used as carbon scrub blowers have a much higher resistance to pressure drops. And can be purchased all day between 50- 100$ the filter is always gonna be the varible item in the build im trying to get this info out to flowhood builders to check into centrifugal blowers.
Adding in here as well, I prefer the Inline Grow room Blowers. Also much less then the squirrel cage and also better than centrifugal blowers (which are similar to squirrel cage anyways, unless your thinking of a different blower and are mistaken calling it a centrifugal blower because centrifugal look identical to squirrel cages) because the inlines are speed controller compatible meaning you dont have to do any blocking or drilling in your box you just move the knob to where you want your airflow at. Check out the fusion breathe line up thats the kind i got and again like you said much less drop at resistance from these as well as they are specifically designed to blow through blockage and carbon filters to filter smell of cannabis.
@@BoomerShroomer yeah cheaper than everywhere offering daytons here in canada anyways, if your in the US you might have better luck finding daytons for around this price but its under 100 USD for this fan www.growlights.ca/8-inch-inline-fan.html
I am literally about to follow this to the letter. I thought buying the fan and the filter was expensive.... Until I saw how much the wood was. Oh well, worth it.
thanks a lot this is perfect and incredible channel , i love this , thanks to france it so nice to learn to grow mushroom now , thank for the knowledge
point of correction the slower the flow the more laminar the flow the higher the flow the higher the chances u get turbulent flow, this is tied to the Reynold's number of the specific fluid
Thanks, this is a great source of information and it appears correct. A lot of other videos and resources want you to start with the listed resistance of the filter (many will suggest 1.0 WG) but fail to take into consideration this resistance is at a certain CFM, in your case 650 CFM. Lots of people miss that the filters have a resistance proportional to the amount of air being pushed through them. My question is how are you checking to see if you have a laminar flow or not? Are you using an anemometer? Thanks for your thorough videos.
I used smoke at first too see if the flow looked turbulent or laminar. It was not an exact science for me. I ended having to vent the back because the flow was too heavy. Now it seems to be just about right and when working in front of it I have very little contamination. I am going to do some testing with petri dishes to see where contamination might be getting in. I would love to test the laminar flow with an anemometer! Might look into getting one.
I just purchased one, once I get my filter set up I am going to try it out. I will reply here and let you know if it was worth the effort. Thanks for the reply and further information!
@@VictoriousGardenosaurus it was, it gave me a decent idea if I had any dead spots and the speed/volume of air coming out. It was pretty cheap as well.
@@BoomerShroomer I have a similar set up. Would you happen to know how large of a hole you put in the back to vent it? Might save me the trouble of trying to perfect it!
Hi I love the video I wanted to know I wanted to add a extra filter on the filter and how to calculate the strain or airflow because I don’t like the idea of having just one filter in it getting dusty inside the box when I could just put another little filter on the outside of the blower motor thank you
I added the pre filter into my math. You just need to add the resistance of the pre filter with the resistance of the HEPA and that will give you the total resistance of both.
I’m sorry one other question if you don’t mind I know you’re busy how long do these filters generally last I can’t find anything a year couple years thank you I appreciate everything
@@richardmullane9279 the guy that sold me mine told me if you have a pre filter and keep the laminar flow is a cleaner room with not a lot of dust that the HEPA filter can last for 5-10 years if not longer. He told me he sells them to hospital that use them in their ventilation systems and they usually replace them every 3 years and they are going 24/7, 365 a year. So depending on how much you use it it could virtually last you a lifetime. So I would recommend getting a 99.99% efficient instead of 97.99. I wish I would have bought the more efficient one cause I basically will never have to replace it unless I I want too.
This video was excellent, especially the specifics on the fan. Why doesnt anyone face their pre filter to the side of the blower that sucks in, instead of above it?
@@BoomerShroomer thats good enough for me- i think i will! Unless i find out a reason to do otherwise ill make it so both filters are in front but with a divide between them. I'll be using your video and equations through my build,, so, thankyou again!
Correct me if I'm wrong but are you taking the derivative of the HEPA and pre-filter curves as if they were linear? The proper way to do it would probably be to add the two curves and then plot that against the fan curve to find the point of intersection. I know these plots are not always readily available from the manufacturer, so the way you do it is a good approximation. Also you should not add the test flow data from the HEPA filter to the graph because it does not include the pre-filter pressure drop.
i bought the same filter yet to construct the box due to some SHITTTTT, but... Our filter is rated at 1.0"WG 1100CFM and says on the website "24x24x11 1/2 |40|1100" which is dimensions, weight(of filter), and CFM. NC Filtration. Thanks for the vid!
awesome video!!!!!!!....I wish you could help me out with your knowledge pretty please....I'm stuck on my build and not understanding the math 😔....I have a Dayton 1TDU2 fan and a damaged filter cabinet that is repairable...the filter is not usable and measures 24"x36"x5-7/8".....The filter I found on line that fits my budget is Flow Rate: 1000 CFM...Initial Resistance: 0.79" WG...Efficiency: 99.99%....and plan on a pre filter as well....I tried to grasp all this for 3 days but it just doesn't click....I just want someones expertise to say yes or no.....Pretty please...!!!!!!
I noticed that you had some difficulty getting the filter into the bigger "box". First make the box a little larger so that the filter slides in and out easier. Then add a "lip" to the filter and also to the box that it goes into. Then put some weather stripping on one lip so that when the filter slides into the box, the lips match up and the weather stripping makes a tight seal. secure the lips together with screws, clamps, nuts and bolts etc. This should make a very secure seal and much easier to assemble
Seems way more complex than it needed to be, also why would you drill holes into the pre-filter cabinet only to put wood particles in it for your filters to clog up with? Just curious
do u have the plans available of pdf by chance?? easier for some including myself to see all the materials and measurements on paperwork so to speak, thank y for ur time
I talked to a lot of people about this and this will basically last forever. Hospital use these filters throughout their buildings and they keep them on 24/7 365 a year and they last 5-10 years. So in a personal space where you are using it maybe one a week? It will pretty much last forever.
Thanks for the cool video! Can anyone tell me if the material of the filter is important, apart from the efficiency rating? I bought an AstroPak filter, with a rating of 99,99% efficiency but not made out of metal (made out of paper / fabric like material). Does this matter? (sorry if this is a stupid question!)
Great video and the project! 👍 Just a pointer. Don’t ever cut on saw horses like that again. That is incorrect and unsafe. Use a scrap piece of plywood or just 2 pieces of 2x4 to have support. Properly set the blade depth and your ready to go. Great job on the box and all the work you two put into it. Happy growing 🌱💜
@@soggynug6371 mdf is a great material to use it’s not as absorbent as you would think. Plenty strong enough as well. Just a good coat of sealer and off to the races
Hi Ashley , I have done this build with 2 different people , sets of supplies . We have found that we cannot good consistent flow rates at different spots around the filter. And there are dead spots. One of my knowledge friends says it’s probably because there isn’t a “baffle” in the plenum. Was wondering if you tested the flow on yours and if your speeds are consistent/ no dead spots. Also if you have any insight on this matter . Using the tdu2 and slightly weaker resistance filter but like 8 pre filters
Watch out Don’t buy this larger blower motor. The cfm rate is way to high. I went with Ashley s choice even with her statement that she “ Wasn’t quite sure so she went with the larger one”. Should have been a Red Flag statement. This motor Blows out the lighter test 2 feet away!!! Also drilling holes only screws up the laminar flow besides blowing crap around the space your in. So I have a nice plywood box ,a 12”thick filter and $300 plus useless motor. 😢
Thank you for the video! I see the fan you bought was a little too strong for your preference, would you recommend a different one for someone following your build? Thank you !
I ended up drilling 12 holes in the back of the laminar flow to reduce the speed. Let me look back at the blowers and see if there is a better fit now that I know how much power it has.
@@relaxandpanic8988 I think this blower would be suitable for the filter I bought. When I do the math it comes out to be about 410CFM and if we divide that buy out 24x24 filter. That gives us about 102 CFM through the filter which is perfect! The blower I got has so much power. I ended up drilling quite a few holes and did not have to silicone the back and it still has sufficient flow. Plus this blow has mounting brackets already built in which it nice. electricmotorwarehouse.com/dayton-model-1tdt3-blower-559-cfm-1600-rpm-230v-60-50hz-4c870/
Let me make a call to PCI filtration systems and ask them about cleaning.. I haven’t really thought about it. But the guy i talked with there was super helpful and I’m sure he would know. Just give me a few days and I’ll get the answer for you.
@Vanessa Bearzatto I talked to Dave at PCI Filtration services and he said most people don't clean their HEPA filter because it reduces the over all quality. They end up just replacing it. But he also said if you have you laminar flow hood running 24x7x365 the HEPA filter would last 3 to 4 years. It will take quite awhile before you need to replace it.
@@BoomerShroomer Ok thank you for your time. I am getting a 61*61*6,8 cm h14 hepa filter from a company that make filters so hopefully it will be a good quality long lasting one.
Thanks for this video! I'm getting close to being done with mine! Did you use armored cable between the blower and switch, or did you wire straight to the switch from the blower? I don't see a good reason to use armored cable but I'm not an electrician.
Hey thanks for the video, it's real nice you put a lot of effort into explaining your process for beginners, this helped me a lot. I have the exact same setup as you so this is very helpful. The only question I have is what size is the backplate you used for the main box? I have to go get this woodcut at a home depot so it'd be nice to know ahead of time. Cheers and thanks again
Awesome video! I've struggled to grasp the math, which has paralyzed me from moving forward with purchasing materials and building it (OCD is a pain sometimes lol). I love the way you break it down, and for the first time I'm starting to get it. My only question has to do with the cubic footage of the actual box that houses the filter and builds the air pressure. Does the cubic footage of the box change the math, or does larger/smaller cu.ft. require a larger/smaller blower?
No, it really doesn’t matter. Really the size the HEPA filter and the blower are important things. If you send me the blower and HEPA filter you are thinking about I can do the math for you and see if it is a laminar flow.
Im building a box using your plans. Im looking at the dayton 1tdt3 559 cfm, 1600 rpm, 60/50 hz 230v. Will this blower be proper per your box design? Thank you for making this video
I’ll look at the number tomorrow. I do know that the blower I got was more powerful than needed. I needed to vent the back of the box with about 15 half in holes.
Yep, this blower will work. It puts out 410CFM and when you divid that by 4 (24inch HEPA filter) it gives you around 102 CFM. Which should be perfect to make a laminar flow.
hi! heading to bluilt this flow hood, thanks for sharing this!! but i have a doubt... why did you decide that the main drawer should be so deep (25.5")?
First time I see your channel and is pretty interesting, I wondered if all those supplies can be purchased online. Thanks for bring us all your knowledge with your videos, greetings from North Carolina. PS. Let me know if you have Facebook, I will glad to be a follower on fb too.
Hi there ! Great video, thanks for all the details and the quality of the explanations, real good job !! I am actually trying to build my own, but i can't find anywhere the specifications for the pre-filter i should buy... i suppose that there is a recomended size and quality for a 24 x 48 Flow Hood with a H14 HEPA Filter, but i'm struggling with it ^^ Thanks in advance, greetings from france ;)
@@BoomerShroomer thanks for the quick answer 🥳 all right for the size ! but my question was more about the size of the particules the prefilter should be able to remove? As the job of the HEPA is only to block the finest contaminants and we want to préventif it from being obstructed by dust or other fine stuff (sorry by the way for my aproximate english ^^)
@@bramvansynghel5386 I think they are like 10 micron. You can get better pre filters I got one from PCI filtration system that was 13 micron. Did I answer your question?
Thank you. You are the only person (besides myself ) to add a pre filter to the hood. This is such a critical part of a flow hood to remove large air particles and extend the life of the expensive Hepa filter.
I also like that you show us the math to do the proper flow calculations, this is where I was struggling. So, in the end, I got a stronger fan and added a motor control knob to adjust the flow of the air.
Great tutorial!
Just starting out with cultivating mushrooms myself..I'm never going to make this but watching you is inspiring.. so bright and bubbly. Your enthusiasm is infectious.
So nice of you! Thank you. Mush love!
😂😂 ayo. Your funny and on point.
@@BoomerShroomer you could have done the calculation in excel with both metrics and american units to put on the description!
I am trying to read your comment but is it even English? What are you speaking about? I was asking about flowhood calculations.
If Yu want to go far with it then you will buy one
I really enjoyed all the science behind choosing the right filter and fan
Greetings, Ashley. am proud owner of your monotub and excited to follow along with your videos all along the way. You must be a biology math science genius. Brilliant and love your mailing inserts. What an adventure. as a nurse, I fully appreciate the sterility and your approach to achieve.
best wishes, Polly Zehnder-Swader
This is actually pretty cool and since you did all the math and even made an instruction book imma give it a try.
This, like all your videos, is really packed full of amazing info. Thanks for sharing your knowledge!
thank you so much for the information you bring to all of us, regards from Bariloche, Patagonia Argentina
Pretty awesome build. I'd personally go smaller with any I made, due to the space. But overall a really good tutorial.
Thank you! It is pretty big and tough to move.
Glad to see you use torx screws. Great choice. Thanks for the explanation of, and calculations on, laminar flow.
Thank you!
@@BoomerShroomer 24x24x11.5 is that the one you used?
@@isaacfindsthefeather7922 yes
oh very nice. I just bought a labconco for the home lab but I'll forward this video to interested colleagues.
Sweet! Thank you!
I broke down my 6ft labconco because it was just too damn large, kept the furnace blowers and other parts and went looking for a good build video and re-found your video!
Two friends ended up using your vid to make hoods, one for fungi and the other for metronomy!
A supply list and a diagram showing a 24x24 flowhood would have been helpful . Thanks for the video!
Direct to the point and so detailed and well informed, I'm speechless. Subscribed liked, loved and appreciated
Thank you! 🥰
I made one mostly like this. I used same filter but had a larger fan I already had. I use it on low & made little feet to raise up & let some air bleed off before the big box. Of course it has 2 pre-filters. But the biggest thing I did different was to bring the bottom & side boards out maybe 15-18 inches for a workspace & added a piece of glass on top that I can shine a light through. It's pretty damn huge but functions great. Only downside is it needs 220v outlet & not portable at all. I wish I had a small one to for the apartment for temp use.
What size room you use yours in
The first thing I need to do this is a partner that is capable! After that it looks really really easy! Thank you!
I really like this design. I recently found a local source for foam PVC. I find this to be a better alternative than wood, being completely plastic, water-proof, anit-microbial, lighter and cheaper. I needed to buy special cutting discs and whatnot for cutting plastic, but overall I think it was worth it.
Thank you for the instructions. I followed many of them. It came out awesome..❤❤
Professor, may I use the restroom? Lol just got some school vibes. Loving all off the educational information. Fantastic teacher!
I find it interesting that ALL the tools look brand new :)
New to this hobby , can't wait to get my first set up ! It's all in the mail lol. Anyways I thank you for sharing your knowledge with us new people. It's literally invaluable.
This was 7 mos ago. I'm wondering how it's going? All my supplies are in the mail right now!
Anything you've run into that you wish you'd known beforehand? Any tips?
Fascinating, well done folks!
Thank you!
Thank you I’ll be building one soon. I can’t believe people give companies their money for something you can build at home for 1/5th the cost.
Yeah and its kinda fun!
great video. I feel like I am ready to grow!
Tim Laubach thank you! 🙂
Very thorough! 😁 🍄 thanks!
Thank you!
Hi, I like your approach and explanation to derive the filter curve. I did in a slightly different manner: as the Flow rate through the Prefilter and Hepa must be the same (they are in series, IN=OUT), the total resistance of the system should be computed considering the HEPA filter nominal FR. Then for each filter, the pressure drop is given for an initial phase, working phase and final state. So in principle 3 curves could be derived, but the one we are interested in is the working phase. Thank you so much for this.
Giovanni
Thank you!
Fantastic work. Thank you 😊
Thank you!
Millimetres are so much easier to use ...and more accurate.
Great video and construction. Very involved and expensive
Definitely more expensive than I expected. But you can definitely do it for cheaper.
so much math, I'm getting dizzy from all the math! LOL! great video so far! thanks for all the info!
Would like to help out, those dayton blowers are mighty expensive and move significantly to pressure drop and require these deep calculations. Centrifugal blowers. That look like flying saucers often used as carbon scrub blowers have a much higher resistance to pressure drops. And can be purchased all day between 50- 100$ the filter is always gonna be the varible item in the build im trying to get this info out to flowhood builders to check into centrifugal blowers.
Thank you
Adding in here as well, I prefer the Inline Grow room Blowers. Also much less then the squirrel cage and also better than centrifugal blowers (which are similar to squirrel cage anyways, unless your thinking of a different blower and are mistaken calling it a centrifugal blower because centrifugal look identical to squirrel cages) because the inlines are speed controller compatible meaning you dont have to do any blocking or drilling in your box you just move the knob to where you want your airflow at. Check out the fusion breathe line up thats the kind i got and again like you said much less drop at resistance from these as well as they are specifically designed to blow through blockage and carbon filters to filter smell of cannabis.
@@3dp_edc Cool thank you! Could you send a link? Are they cheaper?
@@BoomerShroomer yeah cheaper than everywhere offering daytons here in canada anyways, if your in the US you might have better luck finding daytons for around this price but its under 100 USD for this fan www.growlights.ca/8-inch-inline-fan.html
Oh, i forgot to mention these are also much quieter than squirrel cage style!
I am literally about to follow this to the letter. I thought buying the fan and the filter was expensive.... Until I saw how much the wood was. Oh well, worth it.
Boop! Sweet tutorial! Thanks, cheers!
Thank you!
Thumbs Up. This is a great tutorial video!
Thank you! Cheers!
great instructive video🍄
Nice work y’all
you are so badass. Love your channel and videos.
Thank you!
Awsome as always. I will be building one in a month. Thank You
Awesome! Thank you!
Another great video!!!
Daddy Dank thank you!
Great video, you give me Anne Shirley vibes
Thank you!
thanks a lot this is perfect and incredible channel , i love this , thanks to france it so nice to learn to grow mushroom now , thank for the knowledge
Sweet! Thanks!
Yoo dope video.
Appreciate it! Thank you!
Exelent, thanks for yogur help. I am from Panamá.
I'm building one roughly based on this. Thank you!
Awesome, have fun!
Excellent info. Greatly appreciated. Thank you!
Very welcome! Thank you!
Your a damn genius
Great job!
might i recommend a kreg jig for next time for the box securing
Only video I needed to make my own Flowbox. Thankyou for taking the time to make this video.
Dear Ashley. You can use a cheap blower from a used Ac unit and a variAC..MAKE YOUR FLOW RATE WHAT YOU WOULD LIKE
point of correction the slower the flow the more laminar the flow the higher the flow the higher the chances u get turbulent flow, this is tied to the Reynold's number of the specific fluid
Thank you.
Math and shrooms. I love it
my crazy scientist a** is dying to do this!
If you want to reduce the flow of the cabinet you could also use a variable AC adapter (variac) to reduce the speed of the fan
Thats a good idea. I ended up just venting the back with 15 half inch holes and it works great.
@@BoomerShroomer How do you know if it's too much? As in how did you decide yours needed 15 half inch holes? Thanks. Enjoyed your video
Thanks!
Thanks
No problem. Thank you!
Grate job. God bless you. What about pre filter 🤔
Thanks, this is a great source of information and it appears correct. A lot of other videos and resources want you to start with the listed resistance of the filter (many will suggest 1.0 WG) but fail to take into consideration this resistance is at a certain CFM, in your case 650 CFM. Lots of people miss that the filters have a resistance proportional to the amount of air being pushed through them.
My question is how are you checking to see if you have a laminar flow or not? Are you using an anemometer? Thanks for your thorough videos.
I used smoke at first too see if the flow looked turbulent or laminar. It was not an exact science for me. I ended having to vent the back because the flow was too heavy. Now it seems to be just about right and when working in front of it I have very little contamination. I am going to do some testing with petri dishes to see where contamination might be getting in. I would love to test the laminar flow with an anemometer! Might look into getting one.
I just purchased one, once I get my filter set up I am going to try it out. I will reply here and let you know if it was worth the effort. Thanks for the reply and further information!
@@naturalsurvival1536 was it worth it?
@@VictoriousGardenosaurus it was, it gave me a decent idea if I had any dead spots and the speed/volume of air coming out. It was pretty cheap as well.
@@BoomerShroomer I have a similar set up. Would you happen to know how large of a hole you put in the back to vent it? Might save me the trouble of trying to perfect it!
How do you replace the filter?
Hi I love the video I wanted to know I wanted to add a extra filter on the filter and how to calculate the strain or airflow because I don’t like the idea of having just one filter in it getting dusty inside the box when I could just put another little filter on the outside of the blower motor thank you
I added the pre filter into my math. You just need to add the resistance of the pre filter with the resistance of the HEPA and that will give you the total resistance of both.
I’m sorry one other question if you don’t mind I know you’re busy how long do these filters generally last I can’t find anything a year couple years thank you I appreciate everything
@@richardmullane9279 the guy that sold me mine told me if you have a pre filter and keep the laminar flow is a cleaner room with not a lot of dust that the HEPA filter can last for 5-10 years if not longer. He told me he sells them to hospital that use them in their ventilation systems and they usually replace them every 3 years and they are going 24/7, 365 a year. So depending on how much you use it it could virtually last you a lifetime. So I would recommend getting a 99.99% efficient instead of 97.99. I wish I would have bought the more efficient one cause I basically will never have to replace it unless I I want too.
This video was excellent, especially the specifics on the fan. Why doesnt anyone face their pre filter to the side of the blower that sucks in, instead of above it?
Thank you! Good question. I have no idea. I am sure you could do it that way.
@@BoomerShroomer thats good enough for me- i think i will! Unless i find out a reason to do otherwise ill make it so both filters are in front but with a divide between them. I'll be using your video and equations through my build,, so, thankyou again!
@@dreadlegend7365 No problem . Thank you!
Correct me if I'm wrong but are you taking the derivative of the HEPA and pre-filter curves as if they were linear? The proper way to do it would probably be to add the two curves and then plot that against the fan curve to find the point of intersection. I know these plots are not always readily available from the manufacturer, so the way you do it is a good approximation. Also you should not add the test flow data from the HEPA filter to the graph because it does not include the pre-filter pressure drop.
Would the flow area be the same for this filter? NCHP242412S910. I can’t seem to find the flow data
Yes, it is going to be extremely close. This is exactly the same specs as mine.
i bought the same filter yet to construct the box due to some SHITTTTT, but...
Our filter is rated at 1.0"WG 1100CFM and says on the website "24x24x11 1/2 |40|1100" which is dimensions, weight(of filter), and CFM. NC Filtration.
Thanks for the vid!
@@hempwick8203 Sweet!
awesome video!!!!!!!....I wish you could help me out with your knowledge pretty please....I'm stuck on my build and not understanding the math 😔....I have a Dayton 1TDU2 fan and a damaged filter cabinet that is repairable...the filter is not usable and measures 24"x36"x5-7/8".....The filter I found on line that fits my budget is Flow Rate: 1000 CFM...Initial Resistance: 0.79" WG...Efficiency: 99.99%....and plan on a pre filter as well....I tried to grasp all this for 3 days but it just doesn't click....I just want someones expertise to say yes or no.....Pretty please...!!!!!!
I noticed that you had some difficulty getting the filter into the bigger "box". First make the box a little larger so that the filter slides in and out easier. Then add a "lip" to the filter and also to the box that it goes into. Then put some weather stripping on one lip so that when the filter slides into the box, the lips match up and the weather stripping makes a tight seal. secure the lips together with screws, clamps, nuts and bolts etc. This should make a very secure seal and much easier to assemble
Hi thats a good work. Ashley how many m3 of fan?
Seems way more complex than it needed to be, also why would you drill holes into the pre-filter cabinet only to put wood particles in it for your filters to clog up with? Just curious
Yeah she overcomplicated it a bit
If a couple can build this together wo wanting to strangle each other, it’s a good sign they have a awesome relationship lol
do u have the plans available of pdf by chance?? easier for some including myself to see all the materials and measurements on paperwork so to speak, thank y for ur time
I wasn't ready lol
I know this is like asking how long a Light Bulb will last, but in general how long before you need to replace the filter?
I talked to a lot of people about this and this will basically last forever. Hospital use these filters throughout their buildings and they keep them on 24/7 365 a year and they last 5-10 years. So in a personal space where you are using it maybe one a week? It will pretty much last forever.
@@BoomerShroomer That's answer I was hoping for. That being said, I may be having some household arguments about Cats.
Thank you for sharing!! Do you have a list of the specific tools and materials you used? Such as type of wood used, screw size... etc.
I followed the flow hood plan in the description. It tells your everything you will need! From fresh cap mushrooms 🍄!
@@BoomerShroomer Thank you :)
Thanks for the cool video! Can anyone tell me if the material of the filter is important, apart from the efficiency rating? I bought an AstroPak filter, with a rating of 99,99% efficiency but not made out of metal (made out of paper / fabric like material). Does this matter? (sorry if this is a stupid question!)
Great video and the project! 👍 Just a pointer. Don’t ever cut on saw horses like that again. That is incorrect and unsafe. Use a scrap piece of plywood or just 2 pieces of 2x4 to have support. Properly set the blade depth and your ready to go. Great job on the box and all the work you two put into it. Happy growing 🌱💜
Thanks for the tip!
What's your opinion on mdf wood and flowhoods? If paranoid about it blowing cancerous materials at me
@@soggynug6371 mdf is a great material to use it’s not as absorbent as you would think. Plenty strong enough as well. Just a good coat of sealer and off to the races
Hi Ashley , I have done this build with 2 different people , sets of supplies . We have found that we cannot good consistent flow rates at different spots around the filter. And there are dead spots. One of my knowledge friends says it’s probably because there isn’t a “baffle” in the plenum. Was wondering if you tested the flow on yours and if your speeds are consistent/ no dead spots. Also if you have any insight on this matter . Using the tdu2 and slightly weaker resistance filter but like 8 pre filters
Watch out Don’t buy this larger blower motor. The cfm rate is way to high. I went with Ashley s choice even with her statement that she “
Wasn’t quite sure so she went with the larger one”. Should have been a Red Flag statement. This motor Blows out the lighter test 2 feet away!!! Also drilling holes only screws up the laminar flow besides blowing crap around the space your in. So I have a nice plywood box ,a 12”thick filter and $300 plus useless motor. 😢
Is the hood invisible? Nice box though!
Thank you for the video! I see the fan you bought was a little too strong for your preference, would you recommend a different one for someone following your build? Thank you !
I ended up drilling 12 holes in the back of the laminar flow to reduce the speed. Let me look back at the blowers and see if there is a better fit now that I know how much power it has.
@@BoomerShroomer okay thank you I appreciate it !
@@relaxandpanic8988 I think this blower would be suitable for the filter I bought. When I do the math it comes out to be about 410CFM and if we divide that buy out 24x24 filter. That gives us about 102 CFM through the filter which is perfect! The blower I got has so much power. I ended up drilling quite a few holes and did not have to silicone the back and it still has sufficient flow. Plus this blow has mounting brackets already built in which it nice. electricmotorwarehouse.com/dayton-model-1tdt3-blower-559-cfm-1600-rpm-230v-60-50hz-4c870/
If you reach out to me on Instagram I can show you the pics of the graphs of the blower with the flow curves.
@@BoomerShroomer could you have not have just added a speed dial ??
That is an awesome video, thank you. Do you ever need to clean the hepa filter? If so, how would you?
Let me make a call to PCI filtration systems and ask them about cleaning.. I haven’t really thought about it. But the guy i talked with there was super helpful and I’m sure he would know. Just give me a few days and I’ll get the answer for you.
@@BoomerShroomer Oh waou. Thx then. ❤️
@Vanessa Bearzatto I talked to Dave at PCI Filtration services and he said most people don't clean their HEPA filter because it reduces the over all quality. They end up just replacing it. But he also said if you have you laminar flow hood running 24x7x365 the HEPA filter would last 3 to 4 years. It will take quite awhile before you need to replace it.
@@BoomerShroomer Ok thank you for your time. I am getting a 61*61*6,8 cm h14 hepa filter from a company that make filters so hopefully it will be a good quality long lasting one.
@@BoomerShroomer Cheers a lot
Thanks for this video! I'm getting close to being done with mine! Did you use armored cable between the blower and switch, or did you wire straight to the switch from the blower? I don't see a good reason to use armored cable but I'm not an electrician.
Did the Flow Hood working as intended ? I'm wandering If the filter size is big enough.
How was it when you change the filter, hard or easy?
Hi, thanks for your awesome videos, I got a question , can I use air purifier inside a tent instead of flow hood ?
How do you change the filter?
Where od you get that honey comb type materials and what is its purpose? Cheers
Hi Ashley. I'm Emma from Uruguay. The filter must be 6" depth, or i can use a 2" 2/3 instead. Thank you so much!!!
Hey thanks for the video, it's real nice you put a lot of effort into explaining your process for beginners, this helped me a lot. I have the exact same setup as you so this is very helpful. The only question I have is what size is the backplate you used for the main box? I have to go get this woodcut at a home depot so it'd be nice to know ahead of time. Cheers and thanks again
Thank you! 😊
@@BoomerShroomer what size backplate do you use?
@@grxygxds I just measured it to size. I’m not 100 percent sure.
@@grxygxds probably a little late but I'd assume it's 25.5. 24"+¾"*2
What other filters would you recommend??? I cant seem to find the one that your using
Whew! Nice work. Let me know what you folks would charge...
Biggest thing I would change is buying a smaller blower. I ended up having to vent the back.
@@BoomerShroomer beats not having enough flow...
@@naftalibendavid that’s why I went bigger. And if I ever want to go to a 24x48 flow hood, that blower will work. Maybe one day.
What size carriage bolts did you use?
I think it was a ¼” Carriage Bolt.
Awesome video! I've struggled to grasp the math, which has paralyzed me from moving forward with purchasing materials and building it (OCD is a pain sometimes lol). I love the way you break it down, and for the first time I'm starting to get it. My only question has to do with the cubic footage of the actual box that houses the filter and builds the air pressure. Does the cubic footage of the box change the math, or does larger/smaller cu.ft. require a larger/smaller blower?
No, it really doesn’t matter. Really the size the HEPA filter and the blower are important things. If you send me the blower and HEPA filter you are thinking about I can do the math for you and see if it is a laminar flow.
Just build around the filters and it’s all good
Wanna build this with the same dimensions except with the filter 6 inches in depth. Would this affect the resistance?
What filter did you go with? The plans show a 24 x 48? Please help.
Use the same one FreshCap Mushroom used. It will be in the description under his instruction guide. Thanks!
Im building a box using your plans.
Im looking at the dayton 1tdt3
559 cfm, 1600 rpm, 60/50 hz 230v.
Will this blower be proper per your box design? Thank you for making this video
I’ll look at the number tomorrow. I do know that the blower I got was more powerful than needed. I needed to vent the back of the box with about 15 half in holes.
@@BoomerShroomer ok great thank you
Yep, this blower will work. It puts out 410CFM and when you divid that by 4 (24inch HEPA filter) it gives you around 102 CFM. Which should be perfect to make a laminar flow.
Thank you so much for your help its greatly appreciated.
No
hi! heading to bluilt this flow hood, thanks for sharing this!! but i have a doubt... why did you decide that the main drawer should be so deep (25.5")?
Hey I got some good filters but after arriving I found that it has charcoal in it.. will that screw everything up?
What can i use H13 or H14 hepa filter. Is H13 enough for flow hood
Hello can you I get a kit to make it
What was your price breakdown? Very nice job!
Robby Dockery Good question. I’ll work on a detailed breakdown tomorrow. But roughly around $700 total.
Dayton 1TDU2 Blower - $260.00
Koch BioMax HEPA Filter - $180.00
(2) 3/4 4x8 Birch Plywood Sheets- $120.00
Electrical & Hardware - $70.00
TOTAL PROJECT - $630.00
You must’ve growing a hella of a lot of mushrooms
@@BoomerShroomer Koch BioMax HEPA Filter - $350.00 in Canada + $75.00 shipping & 13% tax
@@themyceliumnetwork Wow! Any 99.99 or 97.00 efficient HEPA filter will work. Just needs to be brand new.
Can I get the part numbers for the filters please.
First time I see your channel and is pretty interesting, I wondered if all those supplies can be purchased online. Thanks for bring us all your knowledge with your videos, greetings from North Carolina.
PS. Let me know if you have Facebook, I will glad to be a follower on fb too.
Yes, I purchased everything online.
Hi there !
Great video, thanks for all the details and the quality of the explanations, real good job !!
I am actually trying to build my own, but i can't find anywhere the specifications for the pre-filter i should buy... i suppose that there is a recomended size and quality for a 24 x 48 Flow Hood with a H14 HEPA Filter, but i'm struggling with it ^^
Thanks in advance, greetings from france ;)
Just like a furnace filter will work for the pre filter. Mine is 16x25x1
@@BoomerShroomer thanks for the quick answer 🥳 all right for the size ! but my question was more about the size of the particules the prefilter should be able to remove? As the job of the HEPA is only to block the finest contaminants and we want to préventif it from being obstructed by dust or other fine stuff (sorry by the way for my aproximate english ^^)
@@bramvansynghel5386 I think they are like 10 micron. You can get better pre filters I got one from PCI filtration system that was 13 micron. Did I answer your question?
@@BoomerShroomer yep, this is what i'm looking for, thanks !! 😁
Is it possible to just use a rainbow vacuum?