How to Build a 24x24 Laminar Flow Hood
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- Опубліковано 23 тра 2024
- In this video we show you how to build a 24x24 laminar flow hood.
00:00 Intro
01:13 HEPA Filter Test Flow Rate and Pressure Drop (Resistance)
01:36 The Math of The Flow Curves
06:44 Step 1: Cut the Side for the Main Cabinet
07:06 Step 2: Cut & Fasten 2x3
07:42 Step 3: Build the Main Cabinet
08:23 Step 4: Cut the Top Hole for Blower
08:58 Step 5: Install Weather Stripping
09:24 Step 6: Mount the Plywood Strips
10:06 Step 7: Mount the Blower
10:37 Step 8: Cut Sides for Prefilter Box
11:06 Step 9: Assemble the Prefilter Box
11:23 Step 10: Attach the Prefilter Rails
11:28 Step 11: Attach Prefilter box to the Main Cabinet
11:50 Step 12: Wire Blower and Switch
12:35 Step 13: Attach Plywood Strips for Back Panel
12:42 Step 14: Add the HEPA Filter
13:03 Step 15: Silicon the inside of The Main Cabinet
13:12 Step 16: Attach the Back Panel and Silicon Shut
13:24 Step 17: Cut and Fasten Front Plywood Strips
Dayton 1TDU2 Blower
electricmotorwarehouse.com/da...
1TDU2 Specification Sheet
www.electricmotorwarehouse.co...
1TDT9 Specification Sheet
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Koch BioMax Filter 24x24x11.50
www.kochfilter.com/file/11858...
48 x 24 Laminar Flow Hood Plans
blog.freshcapmushrooms.com/wp...
Pressure Drop Furnace Filter Study
www.texairfilters.com/compara...
FREE Mushroom Growing Guide!
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66Qt Monotubs & Dry Bulk Substrate Kit
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Dry Bulk Substrate Ingredients Kit
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Inflatable Monotubs for Sale!
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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 find it interesting that ALL the tools look brand new :)
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!
I really enjoyed all the science behind choosing the right filter and fan
This, like all your videos, is really packed full of amazing info. Thanks for sharing your knowledge!
Thank you for the instructions. I followed many of them. It came out awesome..❤❤
This is actually pretty cool and since you did all the math and even made an instruction book imma give it a try.
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
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?
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.
Only video I needed to make my own Flowbox. Thankyou for taking the time to make this video.
Fascinating, well done folks!
Thank you!
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
thank you so much for the information you bring to all of us, regards from Bariloche, Patagonia Argentina
Fantastic work. Thank you 😊
Thank you!
Excellent info. Greatly appreciated. Thank you!
Very welcome! Thank you!
Very thorough! 😁 🍄 thanks!
Thank you!
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!
Direct to the point and so detailed and well informed, I'm speechless. Subscribed liked, loved and appreciated
Thank you! 🥰
great video. I feel like I am ready to grow!
Tim Laubach thank you! 🙂
Awsome as always. I will be building one in a month. Thank You
Awesome! 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!
Great video, you give me Anne Shirley vibes
Thank you!
Great video and construction. Very involved and expensive
Definitely more expensive than I expected. But you can definitely do it for cheaper.
Thumbs Up. This is a great tutorial video!
Thank you! Cheers!
Another great video!!!
Daddy Dank 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.
great instructive video🍄
Boop! Sweet tutorial! Thanks, cheers!
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
Professor, may I use the restroom? Lol just got some school vibes. Loving all off the educational information. Fantastic teacher!
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!
Exelent, thanks for yogur help. I am from Panamá.
Nice work y’all
Great job!
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!
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.
I'm building one roughly based on this. Thank you!
Awesome, have fun!
so much math, I'm getting dizzy from all the math! LOL! great video so far! thanks for all the info!
Excellent!
A supply list and a diagram showing a 24x24 flowhood would have been helpful . Thanks for the video!
you are so badass. Love your channel and videos.
Thank you!
Yoo dope video.
Appreciate it! Thank you!
Hi!! Pretty nice work. Been follow for a while and now I’m going to build kill my own flow hood using your instructions. I just have a question is you don’t mind. I wonder if you can share the exact measure of the back panel. I was confuse when you add silicone at the back panel because the picture when tou screw to the panel seem to be slightly different. I Would apreciare so much. Have a nice one
Tha
Hi, thanks for your awesome videos, I got a question , can I use air purifier inside a tent instead of flow hood ?
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!
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")?
Thanks
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!
Thanks!
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 :)
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.
Grate job. God bless you. What about pre filter 🤔
Hi thats a good work. Ashley how many m3 of fan?
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?
Your a damn genius
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
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.
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!!!
Love this video, very informative and detailed, Is there a list of wood and tools needed for the job? I’ve ordered the fan and filter but just want to know exactly what to get for the rest of the build
I used Freshcap Mushrooms 48x24 guide. It is a little bigger but all the same material. learn.freshcap.com/wp-content/uploads/2020/05/DIY_Flow_Hood_Plans_FreshCap_Mushrooms-edited.pdf
Boomer Shroomer thank you so much I really appreciate you providing a link, are you on Instagram? I’d love to give a follow, my Instagram is @mycolah_ have a nice day!
@@Tony-gm1pb Yes, I am! instagram.com/boomershroom/
Thank you! Let me know if you have any more questions.
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
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!)
Did the Flow Hood working as intended ? I'm wandering If the filter size is big enough.
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. 😢
Hey I got some good filters but after arriving I found that it has charcoal in it.. will that screw everything up?
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 ??
Math and shrooms. I love it
might i recommend a kreg jig for next time for the box securing
Dear Ashley. You can use a cheap blower from a used Ac unit and a variAC..MAKE YOUR FLOW RATE WHAT YOU WOULD LIKE
What other filters would you recommend??? I cant seem to find the one that your using
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
my crazy scientist a** is dying to do this!
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 don't understand why people are putting the pre filter on the top of the blower instead of the side where the intake is?? I'm building a 2 x 4 and thinking of putting the filter on the intake side. Any reason why I shouldn't?? Would it be to powerful in direct line? Is that the reason for the top?
I am looking at a 24x24 HEPA filter with .79” WG, and the Dayton 1TDT8 2 speed blower (797/549 CFM). Will this combo work or should I try for a less powerful blower? Love your videos! Any help is much appreciated!
I’ll look at the math tomorrow and let you know.
@@BoomerShroomer thanks so much!
Yep, I just did the math and that combo should work fine. Comes out to be around 101 CFM through the HEPA filter. Should be perfect. I also factored in a pre-filter and it should work with that too.
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
Have you considered adding a UVC lamp inside the box?
I was thinking of making this cabinet except thinner. Perhaps 13in to be exact. Do you think air flow will at all be affected by this?
Yea nvm. I see now the pre-filter nor the fan would fit
Hi Ashley, I'm a Noob and Love your channel . Would like to ask what way is the best way to add seed spawn to substrate. I saw that you layered it in one of your videos .And how much /thick of a final top layer of substrate (1"?) . How thick total? I have mixed the grain and substrate also layered it. reason I'm asking is I had mycelium turn green. Maybe due to over misting , not enough vent holes/ Don't know :(..I have added bigger vent holes and mist less. any Tips
I appreciate you:)
Your contamination came from either the substrate or the spawn. Did you pasteurize the substrate before you use it? I usually make my substrate layer around 3 inches but it does not have to be perfect.
So that's what I'm having a hard time with I live in a farm community so I'm able to get corn wheat Milo millet oats and none of them have been perfect even though I use a pressure cooker for all of my grain and I've also got discouraged to the point where I sterilized my substrate in a pressure cooker in a turkey bag. So currently after many different grain fails the best I've found is Milo but if you can suggest something I would love to hear it. Most of my grain fails are after pretty good mycelium growth inside my mason jars there will be green moldy powder when I shake the jar was the most common not sure what to do to stop it. I'm thinking I'm doing most things correct a side of the fact that I don't have a laminar flow Hood currently using a still air box but planning to change that soon. I don't give up persistence out does resistance LOL 😁
@@wigglewigglewiggle7021 If you are getting contam after you shake the jar then most likely you are not sterilizing the grain long enough. I was having contamination problems with grain too and I stated to sterilize it for more than 2 hours to make sure to kill everything. Now they are usually alway contam free. How long did you sterilize for? I do my bags at 15 PSI for 2 hours.
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 !! 😁
How was it when you change the filter, hard or easy?
Where od you get that honey comb type materials and what is its purpose? Cheers
Will this filter work?
I found a VEVOR air filter that is 24x24x11.50.
The recommended maximum throughput is 3400m3/ hour
CFM: 1100
Pressure drop or static pressure is 220PA
Resistance is less than 180PA
Any assistance would be great! The filter you have linked now cost $500 and more!
I am thinking of making a flowhood using a astrocel 24x24x5 7/8 filter with a w.g. of 1. I am thinking of using the same 1tdu2 and according to my calculations the blower is about twice as strong as it needs to be. Kinda the same situation as you. I was wondering if you have had any problems with it coming out at 200 ft/s instead of what Paul staments says100 ft/s?
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
Do you have a suggestion about where to buy a reasonably-priced HEPA filter for this project?
I would suggest looking local. Sorry I can't be of more help.
What can i use H13 or H14 hepa filter. Is H13 enough for flow hood
what about the prefilter on top of the blower? What did you use? Where is it from? Thank you so much for your help.
It is a 16x25x1 normal furnace filter and I bought it from home depot
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!
Hey Ashley. Why did you use 25.5 x 24 size for the top and bottom pieces. Why the extra 1.5 inch on one side. Is it because when putting the box together some of the sides overlaps and this makes up for it? Thank you in advance for this helpful information.
Ahhh I think I figured it out. If your wood is 0.75 thick that would make sense then.
Does yours vibrate some? I have a vertical vibration to mine that is pretty intense. The fan is balanced I checked that.. wondering if it’s normal from the way we mounted it to the wood
Yes, definitely
@@BoomerShroomer looking on Amazon reviews for the same blower, there also others that are having the same problem. I’m sending my back through warranty for replacement through the supplier and contacting the manufacturer about this. I’ll let you know if there’s a fix for this
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.
Is a flow hood ultimately required to grow in sanitary conditions? I found this video from the grow guide and it seems like the supplies for starting will already be fairly expensive all put together (though not as bad bought in pieces over a few paychecks), and I've heard you can put a monotub almost anywhere that more or less clean or not completely filthy, and that mostly you just want a cover over the tub to prevent airborne pathogens coming in from the top.
No, it is not needed but definitely helpful.
An inexpensive portable HEPA air filter can also help if you're not using agar--I actually use my bathroom of all places, and alcohol sterilize all the surfaces prior to use, and filter the air overnight. That's for packing the monotub with spawn and substrate where you want conditions to be very clean but not needing laminar flow hood clean. Once everything is in place the tub can be placed somewhere quiet. Never had a contam using pasteurized substrate + jar or bag grown spawn.
@@johnsmolley1941 while fanning you don't really need to be in an air purified low air flow area? You could just use any room basically?
@@kcksd10 You could and I have used a variety, but settled on the bathroom because of the small space in terms of surfaces area, and the number of air turnovers per hour--I have probably 20. I get very nervous without filtration--even the monotubs and stacked tubs folks use polyfill or some other material for air filtration. In the end I agree--that once fully colonized and pinning, your need for sterile circumstances drops considerably. Rule of thumb, the closer you are to fruiting the less the risk of contamination when all kinds of buggers are competing for nutrients, and the mycelium doesn't have the upper hand.
I’m having a little bit of difficulty understanding the pre filter. It sends as though the pre filter and the main filter are perpendicular to one another which means the pre filter isn’t filtering the air before it gets to the main filter. Am I seeing this wrong, or am I not understanding how the air is flowing.
Hi! Love your channel! I'm extremely green at all this, but I'm just growing fancy mushrooms for myself and my daughter to show her science is cool, so I'm not producing nearly as many as you. Do I absolutely need one of these? Can I just do everything in front of my regular hepa filter? I can attach pic. Thanks so much! Hoping to Fruit our first bag of lion's mane soon!🤞
No, you definitely don't need one of these. Just use a room with minimal airflow and you are good.
@@BoomerShroomer thank you so much for your reply! I will just try in bathroom and hope for the best! Is the flow hood just for cloning and spore prints and agar plates? I'd love to try all that in the future! Thanks again!
@@BoomerShroomer how about when fanning? Can you just do that in a normal room in your house or do you want to be in a low air flow air purified room as well?
Does using a laminar flow box provide that much more security against contamination that it is worth the cost and effort? Thx!
Yes, definitely.
@@BoomerShroomer Thank you.
Is the laminar flow hood absolutely necessary for growing mushrooms?
It looks tall. How much height clearance do i need for this hood?
I have the tools and workshop to build this.
The question I would have is, How are you going to replace the filters?
That is obviously going to be an expensive build and I wouldn't want it to be a disposable unit because I can't change out the filters at some point.