Well, since you asked...I think somebody should do an instructional video about sizing the fan(CFM) and the duct sizing(4"or6") all in relation to the tent size. That is what I was looking for on YT and that led me to your video called "What size carbon filter and inline extraction fan for my grow room?". And that's what led to my "I thought this would be about sizing." comment. I still enjoyed it and picked up some knowledge. It just was not what I thought it would be. I am a total newbie so for me, somewhere between videos that get in the weeds and over my head to the ones that are little more than unboxing with just about no usable information. Remember, I said "I think somebody" and by that I do not mean to imply that you personally should do this, just somebody to help us neophytes. I swear I don't mean to come across as the asshole I think I come across as. Peace.
+puffer1958 Not at all my friend. You actually inspired me to make a better, follow-up video that gets more to the point and covers a variety of different sizing examples-as I think **this** is the video you expected and needed. I make videos with the beginner firmly in mind, so if-as a newbie-it left you wanting then a follow-up is most definitely required. I genuinely appreciate all feedback on my channel and believe me, you are one of the polite ones! Lol! :) In the meantime, if I can help you out with any specific questions on your planned grow then please always feel free to ask-as long as you're subbed ;-)
I was thinking exactly what you were. I come to a video that was advertised 'What size for your grow tent' and was shown what size this particular person needed for theirs and theirs alone.
Jorge De Santiago Thanks for your comment Jorge. I'm really happy with them! Sure you will be too. Let me know how you get on. Be sure to check out the Phresh Skinny filters too. Peace.
At 3:18 I saw that you directly attached the fan to the wood framing. An old trick I saw was they suspended a plate with a motor. The weight rested entirely with 4 springs and the noise drop was HUGE!!! Try it
+Raymond Edge awesome tip Raymond thanks for sharing. Noise isn't an issue in my basement but sound suppression is a great topic for a future vid. Thanks!
+Hydro Ponic That's a coincidence Hydro Ponic. So did I! My exhaust comes out in my back yard which is surrounded by other houses and when the fan is cranked up it really bellows! It's okay now as I'm propagating and the fan is just ticking over to maintain RH up high (and I've only got two lights total
hey everette... probably going to be purchasing my max fan and new phresh filter to battle this never ending smell issue . weve talked before and you are SO helpfull.....i commented a bunch on you orginial 8inch maxfan review i think? loved it!!!! that being said > THIS IS TODAYS QUESTION HAHA: im going to get the 10"maxfan (comes with speedcontroller) which is a 1065 c.f.m. fan...... and im looking at either the phreshfilter 10"x24 (840cfm filter) or so i want the 10"x39 (1400cfm rated filter) my question being.... do you want your filter bigger (10x39) and maybe the fan works too hard..?? or go with the smaller filter. THANKS SO MUCH for ALL your help... you really are my fav. youtube channel
+northCALIFA Hey northCALIFA-great to hear from you, as always my green-fingered friend. Go for the 10"x39" (1400 CFM) filter. You filter's stated CFMs should be no more than your fan's CFMs. Always happy to help! Thanks for the positivity. Peace and happy growing, Everest.
hmm. the filter is 1400 cfm the 10" hyper fan is rated at 1065 cfm.... so the filters cfm IS in fact larger.... am i missing something? :) sorry i am a little slow at times haha heres what im looking at. ebay.com/itm/221576984490
You'll all good my friend. The thing to avoid is using a fan with a higher CFM rating than your filter, as you are dragging more air through it than it is designed to handle. So, with a filter that is rated for more CFMs than your fan, there's not issue as you're within its usage quota. So 1065 CFM fan + 1400 CFM filter = Awesome!
thanks as always Everest!. i got smoke comin off my credit card but its about time i upgrade the "lungs" of my room..... just ordered the 10inch with the big 10 inch filter!
Really great, informative video. Your room is impeccable. However, as you seem to be growing leafy greens and other vegetables, I'm wondering why you feel the need to filter the air being exhausted at all? Isn't the only reason to run exhausted air through a carbon filter to mask undesirable odors and keep the garden discreet?
Hi Matt. Great question. I sometimes use the exhausted air from my garden's hoods and the garden itself to heat the upper floor in my house, especially in the depths of winter. The filter insures the air is odorless and free of particulates. I love tomatoes but don't want my living room smelling like a greenhouse. I highly recommend them for all indoor gardens, as recirculating scrubbers or inline filters.
Makes sense. Great idea to heat your house with exhausted grow room air, I saw you were doing the same with your lights. Keep up the great work, man, and keep the videos coming!
What are the tubes on a carbon filter placed for? If you only want to clean a room from odours and chemicals isn't it better to just leave the filter like that hanging and no tubes on their ?
Thanks for all the vids!! You have been a great help. I have a question as a newb...my room is 288 cubic feet. I have a 3x3x72 tent inside the room. I would like to have a scrubber outside the tent and extraction from the tent outside. How would you go about figuring that?
Hey Everest, I wanted to run a setup by you to see if I understand your process. If I have six 4x8 flood trays in a 9' tall room (4.5x48x9) I would need to exchange 1944 cfm. After factoring in the 20 percent filter loss two 10" hyperfans and one 6" hyperfan would be just sufficient as the cfm's would be ((1065x2)+315) x.8=1956. My current two extraction fans can produce 2062 cfm without filter loss, so with filter loss they would be producing 1649 cfm, meaning intake would outpace exhaust by roughly 307 cfm. Will it be damaging to the plants to have a slight exhaust deficit?
David Gingrass Hi David. No, I guess you don't need to mount the fan, but you need to insure it's securely well to the carbon filter-and the carbon filter, in turn, should be positioned as high up as possible for the best ventilation effect. As for where to exhaust to-I strongly recommend outdoors-as you're removing not only heat but humidity too-and you don't want moisture levels building up indoors any more than you want heat issues.
+George Kavallos it will be noisy. Choose the Stealth fan model instead that's encased in an insulated box, consider a silencer too. Phresh also make them. Insulated ducting will further reduce noise.
Michael Reyes I'd be glad to, Michael! How many watts are you running in there? What sort of building is the room located in and what floor? And what sort of climate do you live in? Feel free to post your question (with all the info) on our Facebook group-we have HVAC specialists on there who can lend a ton of expertise. Thanks for stopping by and I appreciate you subbing my channel yesterday too! Peace.
Can you explain the reasoning behind running a negative air pressure? I have read that running a positive air pressure helps minimize the risk of contaminating the grow space i.e. mites.
+YouNeedToHearThis Thanks - awesome question. Negative air pressure helps with odor control if you’re growing smelly crops. I would always draw air through intake filters to mitigate the risk of sucking in bugs. There’s an argument that positive air pressure increases the physical amount of CO2 in the room too :) I will demonstrate both in upcoming vids.
I am a new grower but I have a question for you I turn on my intake and my fan to blow in and it's like a balloon my tent is why is that and I have the air flow turn way down
What size are your intake and extraction fans respectively please? Ideally your extraction fan should remove 20-30% more air (taking into account pressure drop from carbon filter) than your intake fan to maintain negative pressure in your grow tent. Positive pressure (balloon tent) isn’t such a bad thing it can just make it more difficult to control garden odors escaping into your home.
hey bro one more question please :) ! and thanks for all the vids, keep it coming! If the fan is 1065 CFM and Filter is only 850 CFM, are you planning to run that fan at less than 100% the filter is maxed at 850....? i have a 6 in hyperfan but not sure which phresh filter to order. Im planning to use the hyperfan at closer to minimum power because I'm only venting a small area of about 55 square feet.
tri to Good question Tri To. Check out my other video "Setting up Air-Cooled Reflectors: The Right Way" - ruclips.net/video/UUxsPDwVcD4/видео.html - it explains why you should blow (not suck) air over your lamps in order to create a positive pressure inside your air-cooled lighting system. Any leaks will simply blow air into your garden which will, in turn, be dealt with by your garden's ventilation system and any air filtration equipment. Alternatively, you could take a look at inline carbon filters (designed with a duct port at each end) and a duct booster fan to counteract the pressure drop.
+Toste Good question! It's a bit of a chicken and egg math problem this one. A carbon filter's stated CFMs basically says "I can clean air passing through me at X CFMs, no more please." A fan's stated CFMs says "I can move air at Y CFMs when I don't encounter any additional resistance," to which a filter replies sheepishly, "Ah sorry fan, I'm going to slow you down by 20 to 25 percent-sorry about that." You could reasonably conclude that you could get away with using a slightly higher CFM fan (20 to 25 percent) and that, given the air resistance created by the filter, the air would not be passing at a greater velocity than it can handle. My advice, to be on the safe side, is to ensure your fan and filter's CFMs are evenly matched.
It's easy.. Multiply your total room cu ft x 0.75. Why? because filters restrain about 25% of the fan. Then divide that by 3-5 minutes most meaning that the air will be replaced every 3-5 minutes as desired. Then pick your filter size as close to the fan as posible never less and add a minute over due the restrictions, example. Room 10x10x10=1000 cu ft 1000x0.75=750 cu ft 750/3 minutes=250 CFM needed to exchange the room every 4 minutes, it will in 3 without a filter. If you need more help give me your room specs..✌🏼️
+Rob Yes, for well over a year now. I'll talk about thermostatic fan speed controllers in an upcoming video soon. I'm investing in more of these controllers. Good, reliable kit.
I think it would of been cool if you could of put beams to hold up the lights and fans and ducting and left that beautiful ceiling exposed so you could see it. I really like the wine cellar look . Thank you Ray
jaime delgado They’re fine with the basil, James, it’s recirculating the hot air up to my living floor above during winter that requires the filter. I like the heat but not the garden odours - the carbon filter brings super clean, warm air to my winter living quarters.
Does anyone no what size inline fan would I need if I am using 10" hyper fan in 240x 240x 200cm tent with 4 600w hps lights I don't think I would need a 6" or 8" hyper as I want to obtain negative pressure.
+S man Hi S man. A 10" on extraction would definitely provide adequate air exchange, especially if paired with an 8" input. You could even get away with 6 x 600W in that space with the right air exchange - made easier with air cooled hoods of course.
Everest Fernandez thanks for the replys with the 10" would I be okay with an inline fan that has 500cfms it's not hyper fan just rvk of course I need to obtain negative pressure thanks.
Will the 6 inch hyper fan be great for my grow tent? I cannot make up my mind in what fan to get for my 36"x24"x63" grow tent. There's just too much fans to choose from, I really like the hyper fan but I don't know if it'll keep negative pressure that I want. Thanks in advance
Justin Brower Thanks for your question Justin. That's a small tent-about 33 cubic feet. What is your light source? The six inch Hyper Fan shifts 315 cubic feet per minute-allowing for pressure if using with a carbon filter-maybe 240 CFMs at full power. Running at 35% using the included speed controller you're roughly looking at about 80 CFMs (35% speed doesn't necessarily equate to 35% of the CFMs!) - so that would be exchanging the air in your tent twice every minute-I recommend at least once a minute so you're well above that. Just keep an eye on relative humidity (especially at the beginning) to make sure it doesn't drop too low as you're always removing transpired moisture from your tent as well as heat. When your plants are mature and maybe crammed in a small tent ;-), you'll probably be glad you over-specced the fan! Always a good idea to give yourself the option of some extra oomph if you need it. Anyway-good luck with your grow and I'm here if you need me. Thanks for subbing the channel. Peace.
My light source is a 400 watt digital dimmable grow light kit from iPower, I ordered the 17" cool tube and filter to run it through, I have a 100cfm fan but the temps were getting sky rocketed still, it's pretty humid here in Alaska, so humidity won't be a problem. I'm using my led light until the cool tube comes in next month. I was wanting to keep a negative pressure so I can stick my carbon filter strips on the vents it has made into the tent at the bottom. Great videos by the way, love them. Thanks again for the advice.
Justin Brower Thanks Justin. Sounds like you're having fun up there in Alaska! I've always wanted to visit. Glad you like the videos. I upload regularly to the channel and I'm always happy to give you advice / or at least an opinion! Plus, if I don't have the answer, I know someone who probably does! Peace.
Hello, what size fan and filter would I need for a 2 by 4 by 7 tent for. I currently have a 4 by 4 by 7 tent with a 4" HO Can Fan with a 4" by 15" 250 CFM Active Can-Lite Filter.
+IETCHX69 During the winter I extract my grow room's air to my bathroom and entrance hall on the floor above to help heat my house. My wife doesn't want the whole house to smell like a "garden" though so a filter is important, even when growing tomatoes and suchlike.
"What size carbon filter and inline extraction fan for my grow room?" Clickbait. (false advertising) You got me. Good for you. You have 20% thumbs down. That should tell you something.
haha she has good taste. Not that a brick enclosure (color wise) is productive for growing plants your cellar is neat looking minus the Sheetrock enclosure inside.
Fatsacks Allday Hey Fatsacks, thanks for your comment. My general rule of thumb was based on growing heavy fruiting annuals to full maturity indoors. Most growers use air exchange to combat rising temperatures (from their grow lights) and relative humidity levels (from plant transpiration) in their indoor gardens-but the other important factor is carbon dioxide. Without supplementation, indoor growers are relying on atmospheric levels-currently around 395 ppms. Plants need eight photons of light to harvest one molecule of carbon dioxide. As your plants become larger their need for carbon dioxide increases exponentially. I sometimes refer to it as the 'glass ceiling' in many indoor gardens. Everything seems to be going fine when plants are small and then development slows to a crawl for the final few weeks. This is most often due to inadequate carbon dioxide as a result of insufficient air exchange. You may well find that exchanging your growing area's air volume every 3 - 5 mins works fine during propagation and early vegetative growth. Over ventilation at this stage can be detrimental to plants as it can strip the air of valuable humidity and raise vapour pressure deficit too high. But as your plants mature I recommend upping the air-exchange to at least once every minute. I'd be interested to learn more about your experiences so feel free to chime back in here or take a look at our Facebook discussion group if you swing that way. Oh-and please consider subbing the channel too. Thanks again. Peace and happy growing, ~Everest
Your hyperfan looks like crap from China, and there is not even a temperature controller. And only 2x1000w on this fat room? You don't need any air cooled hoods with such room... That's a waste of money and lumens. Just install large adjust a wings and remove your air cool hoods on their air separate circuit... It is not needed.
funkiestoyster I surveyed 1000 prisoners and found that 95% of them liked eating strawberries. But this does not mean that eating strawberries leads to criminal tendencies. Similarly, an informative video about fan sizing has to use SOME BRAND of fans. And, while it may be easy for you, arriving here at the tail end of a long line of causality, to wrongheadedly link my presentation to the promotion of a given brand, the only conclusion you should arrive at is that you can eat as many strawberries as you like, and the worst that can happen is that you get a mild skin rash.
Boy, I like your channel and the info that you provide; but, the equipment that you use is very expensive, especially when a person is just start an indoor garden. So one has to suspect that you are mostly promoting and pushing certain products because you get them for free to test to promote on your youtube channel, right? Free advertisement for the manufacture, views and free equipment for you; but, on this side of the screen there just drooling over the equipment that you are installing in your mini profissional grow room, you know what I mean? Where can I get similar quality equipment that is not as expensive as the equipment in these videos? thanks
Kenneth Elston Hey Kenneth-thanks for your thoughtful feedback. If you Google my name you will see that I have worked within the indoor gardening industry for many years, mostly as a writer and publisher. As such I enjoy good relationships with many manufacturers and wholesalers. That said, I use what I use because I believe it does the job well-not because I'm being paid to mention them. I am a grower, first and foremost-and I've been collecting grow gear for yeeeeeears. Sure I know the right people to call for the best price, but my hobby still costs me $$$$-but it's my passion. I'd be happy to recommend budget versions of any type of equipment you're looking for! Just let me know where in the world you are based and what your goals are. Oh-and don't forget to sub the channel if you want regular updates too! :) Peace and happy growing, Everest.
Thanks for the reply, I downloaded an equipment checklist from your website that I will soon start acquiring the parts. I will certainly take you up on your offer to be guided to lower cost equipment that I won't regret buying or have problems with after buying due to poor construction. Keep up the good work sir and keep the gardening information coming, thanks for educating the masses.
Kenneth Elston You're welcome Kenneth. Feel free to let me know what sort of gear you are looking for and any budgetary constraints and I'll do my best to help you. Don't forget about the secondhand equipment market too! There are bargains to be had. I don't recommend buying secondhand ballasts though.
Funny you said that; I just visited a local hydroponics store today and they had a few used hoods, ballasts, and light kits that weren't too beat up at an okay price. But, not knowing a whole lot about the brands I didn't want to put my money in anything that I would be wasting my time buying. Plus the guy who was helping me kept pushing me to buy new equipment instead of wasting money on used equipment since I'm just starting out and have nothing but some seeds :-) He was really pushing this $380 600 watt ballast as a good low end to mid-range starting point for a beginner grower. Being the way I am (very frugal with my money); I get cautious when someone keeps pushing a certain product at me; that's one way to certainly have me not buy whatever they are pushing and possibly not shop in the store anymore. I do have 4 bulbs; 2 HPS 400 watt 2000k and 2- metal halide, 400 watt, 4200k that were given to me free by a friend who knows I want to start growing tomatoes and peppers indoors. Living in Alaska, we have a very short growing season if any at all. So, I thought that since I had the bulbs, I would just have to buy a hood for the bulbs a fan and get to growing. But, the guys at the store I visited today told me that I am still $500-$1000 from just having a complete light kit, WOW! In a way it's getting kind of discouraging when I look at just how much it's costing to grow food indoors. I was trying to get into a new hobby that's healthier and cheaper than my gun buying and shooting hobby. Gardening is ending up costing more than my shooting hobby :-(
Kenneth Elston Hi Kenneth, you don't need to spend that much on a ballast. For around $250 you can buy a Galaxy select-a-watt electronic ballast that will run 1000W, 600W and 400W lamps (metal halide or HPS) - as you are just starting out I recommend buying versatile equipment like this. Just get an entry level / secondhand reflector to begin with and you can be up and running fairly economically. The Galaxy Digital Logic series have a built-in timer too which saves you money on timers and relays. Your ballast is the 'engine' of your grow room and is worth investing in. The rest you should be able to get together pretty cheaply on the used market.
Wow Everest, amazing grow room. I wish I had one like that. :D Keep up the fantastic films.
Thanks Farseer. I waited many years to get the grow room of my dreams. Where there's a will, there's a way! :)
friendly advice i like using clamps to secure vent to fan its just easy then tape to take on an off little more money but well worth it
I thought this would be about sizing.
Hi Puffer. Let me know any question I didn't answer and I'd be happy to help.
Well, since you asked...I think somebody should do an instructional video about sizing the fan(CFM) and the duct sizing(4"or6") all in relation to the tent size. That is what I was looking for on YT and that led me to your video called "What size carbon filter and inline extraction fan for my grow room?". And that's what led to my "I thought this would be about sizing." comment. I still enjoyed it and picked up some knowledge. It just was not what I thought it would be. I am a total newbie so for me, somewhere between videos that get in the weeds and over my head to the ones that are little more than unboxing with just about no usable information. Remember, I said "I think somebody" and by that I do not mean to imply that you personally should do this, just somebody to help us neophytes. I swear I don't mean to come across as the asshole I think I come across as. Peace.
+puffer1958 Not at all my friend. You actually inspired me to make a better, follow-up video that gets more to the point and covers a variety of different sizing examples-as I think **this** is the video you expected and needed. I make videos with the beginner firmly in mind, so if-as a newbie-it left you wanting then a follow-up is most definitely required. I genuinely appreciate all feedback on my channel and believe me, you are one of the polite ones! Lol! :) In the meantime, if I can help you out with any specific questions on your planned grow then please always feel free to ask-as long as you're subbed ;-)
+Everest Fernandez (Just4Growers) Thanks E. Subscribed!
I was thinking exactly what you were. I come to a video that was advertised 'What size for your grow tent' and was shown what size this particular person needed for theirs and theirs alone.
thanks, perfect understanding isolated grow room setup and thank you for graphıcs! please keep continuous those type content good luck!
You convinced me to buy the Hyper Fan and the 10' Fresh Filter.
Jorge De Santiago Thanks for your comment Jorge. I'm really happy with them! Sure you will be too. Let me know how you get on. Be sure to check out the Phresh Skinny filters too. Peace.
At 3:18 I saw that you directly attached the fan to the wood framing. An old trick I saw was they suspended a plate with a motor. The weight rested entirely with 4 springs and the noise drop was HUGE!!! Try it
+Raymond Edge awesome tip Raymond thanks for sharing. Noise isn't an issue in my basement but sound suppression is a great topic for a future vid. Thanks!
iv just brought 1 with a silencer, cant wait to get it through the post
+Hydro Ponic That's a coincidence Hydro Ponic. So did I! My exhaust comes out in my back yard which is surrounded by other houses and when the fan is cranked up it really bellows! It's okay now as I'm propagating and the fan is just ticking over to maintain RH up high (and I've only got two lights total
hey everette... probably going to be purchasing my max fan and new phresh filter to battle this never ending smell issue . weve talked before and you are SO helpfull.....i commented a bunch on you orginial 8inch maxfan review i think? loved it!!!!
that being said > THIS IS TODAYS QUESTION HAHA: im going to get the 10"maxfan (comes with speedcontroller) which is a 1065 c.f.m. fan...... and im looking at either the phreshfilter 10"x24 (840cfm filter) or so i want the 10"x39 (1400cfm rated filter) my question being.... do you want your filter bigger (10x39) and maybe the fan works too hard..?? or go with the smaller filter. THANKS SO MUCH for ALL your help... you really are my fav. youtube channel
+northCALIFA Hey northCALIFA-great to hear from you, as always my green-fingered friend. Go for the 10"x39" (1400 CFM) filter. You filter's stated CFMs should be no more than your fan's CFMs. Always happy to help! Thanks for the positivity. Peace and happy growing, Everest.
hmm. the filter is 1400 cfm the 10" hyper fan is rated at 1065 cfm.... so the filters cfm IS in fact larger.... am i missing something? :) sorry i am a little slow at times haha heres what im looking at. ebay.com/itm/221576984490
+northCALIFA No worries. The CFM rating for carbon filters states the maximum airflow, so you are all good to use a fan with a lower CFM rating.
You'll all good my friend. The thing to avoid is using a fan with a higher CFM rating than your filter, as you are dragging more air through it than it is designed to handle. So, with a filter that is rated for more CFMs than your fan, there's not issue as you're within its usage quota. So 1065 CFM fan + 1400 CFM filter = Awesome!
thanks as always Everest!. i got smoke comin off my credit card but its about time i upgrade the "lungs" of my room..... just ordered the 10inch with the big 10 inch filter!
So extract more air than the intake for negative pressure?
Really great, informative video. Your room is impeccable. However, as you seem to be growing leafy greens and other vegetables, I'm wondering why you feel the need to filter the air being exhausted at all? Isn't the only reason to run exhausted air through a carbon filter to mask undesirable odors and keep the garden discreet?
Hi Matt. Great question. I sometimes use the exhausted air from my garden's hoods and the garden itself to heat the upper floor in my house, especially in the depths of winter. The filter insures the air is odorless and free of particulates. I love tomatoes but don't want my living room smelling like a greenhouse. I highly recommend them for all indoor gardens, as recirculating scrubbers or inline filters.
Makes sense. Great idea to heat your house with exhausted grow room air, I saw you were doing the same with your lights. Keep up the great work, man, and keep the videos coming!
What are the tubes on a carbon filter placed for? If you only want to clean a room from odours and chemicals isn't it better to just leave the filter like that hanging and no tubes on their ?
Wouldn't the fan pull out more air by being inside the tent and the carbon filter outside of tent?
Thanks for all the vids!! You have been a great help. I have a question as a newb...my room is 288 cubic feet. I have a 3x3x72 tent inside the room. I would like to have a scrubber outside the tent and extraction from the tent outside. How would you go about figuring that?
Hidden gem
Is it noisy without ducting or is it better like that ??
Great videos!
pls use the metric system Q_Q
Thanks IP-I wholeheartedly agree and will incorporate metric equivalents in all future videos. Thank you.
That - would - be - so - awesome!
Will C f*** yeah!!!!!
Thanks for the informative video. What are your recommendation for a 5Lx3.9Wx5H grow tent??
Good of you to show us your setup but i must say i find the title a little bit clickbaity and i didn`t learn much. Anyways, thanks man.
Not one of my finest vids. I'll make some better content on this topic.
Excellent
+Beck Chan Thanks Beck.
+Everest Fernandez (Just4Growers) ^_^
Does anyone know the name of the fabric the filter is covered with?
Hey Everest, I wanted to run a setup by you to see if I understand your process. If I have six 4x8 flood trays in a 9' tall room (4.5x48x9) I would need to exchange 1944 cfm. After factoring in the 20 percent filter loss two 10" hyperfans and one 6" hyperfan would be just sufficient as the cfm's would be ((1065x2)+315) x.8=1956. My current two extraction fans can produce 2062 cfm without filter loss, so with filter loss they would be producing 1649 cfm, meaning intake would outpace exhaust by roughly 307 cfm. Will it be damaging to the plants to have a slight exhaust deficit?
What what size do I need for 24×24×60 Or 32×32×60 grow tent?
What is a good filter for a 20x10 green house?
What tape did you use to secure the fan to the scrubber
At what stage of the plant should i start using a fan?
Nick Hidalgo Plants need air exchange / ventilation increasingly throughout their lifecycle - so right from the get go.
Are they noisyness? What about vibrations on you ceiling yo?
Can you run a fan without the carbon filter? If all you're wanting is air circulation and not odor scrubbing?
You sure can.
So does this fan have to be mounted? Do you have to exhaust into the out doors/ I live in apt this is why I ask.
David Gingrass Hi David. No, I guess you don't need to mount the fan, but you need to insure it's securely well to the carbon filter-and the carbon filter, in turn, should be positioned as high up as possible for the best ventilation effect. As for where to exhaust to-I strongly recommend outdoors-as you're removing not only heat but humidity too-and you don't want moisture levels building up indoors any more than you want heat issues.
Yeah all that for cilantro !! Checks out
Would this work for removing cigar smoke in room?
Can i use this 10 inch fan for my cigar lounge ? will it be noisy?will i need to muffle the sound?
+George Kavallos it will be noisy. Choose the Stealth fan model instead that's encased in an insulated box, consider a silencer too. Phresh also make them. Insulated ducting will further reduce noise.
i have a 9126 CF bloom room that I have to make a filtration set up for can you help
Michael Reyes I'd be glad to, Michael! How many watts are you running in there? What sort of building is the room located in and what floor? And what sort of climate do you live in? Feel free to post your question (with all the info) on our Facebook group-we have HVAC specialists on there who can lend a ton of expertise. Thanks for stopping by and I appreciate you subbing my channel yesterday too! Peace.
Everest Fernandez PS - If you don't use Facebook then we can discuss here instead, no problem!
Can you explain the reasoning behind running a negative air pressure? I have read that running a positive air pressure helps minimize the risk of contaminating the grow space i.e. mites.
+YouNeedToHearThis Thanks - awesome question. Negative air pressure helps with odor control if you’re growing smelly crops. I would always draw air through intake filters to mitigate the risk of sucking in bugs. There’s an argument that positive air pressure increases the physical amount of CO2 in the room too :) I will demonstrate both in upcoming vids.
Awesome, thank you for replying
I am a new grower but I have a question for you I turn on my intake and my fan to blow in and it's like a balloon my tent is why is that and I have the air flow turn way down
What size are your intake and extraction fans respectively please? Ideally your extraction fan should remove 20-30% more air (taking into account pressure drop from carbon filter) than your intake fan to maintain negative pressure in your grow tent. Positive pressure (balloon tent) isn’t such a bad thing it can just make it more difficult to control garden odors escaping into your home.
Hi, great videos!
Will putting ducting between fan and carbon filter reduce noise at all? or will it just reduce efficiency...?
It will do both-use insulated ducting.
insulated ducting will reduce noise even more ?
hey bro one more question please :) !
and thanks for all the vids, keep it coming!
If the fan is 1065 CFM and Filter is only 850 CFM, are you planning to run that fan at less than 100%
the filter is maxed at 850....?
i have a 6 in hyperfan but not sure which phresh filter to order. Im planning to use the hyperfan at closer to minimum power because I'm only venting a small area of about 55 square feet.
do i size the room or the growing area? my room will have space to walk around the plants
The active growing area, not the room.
Do you need any carbon filter for the air cooled hoods also? I just afraid that the odor would leak through the air cooled hoods.
tri to Good question Tri To. Check out my other video "Setting up Air-Cooled Reflectors: The Right Way" - ruclips.net/video/UUxsPDwVcD4/видео.html - it explains why you should blow (not suck) air over your lamps in order to create a positive pressure inside your air-cooled lighting system. Any leaks will simply blow air into your garden which will, in turn, be dealt with by your garden's ventilation system and any air filtration equipment.
Alternatively, you could take a look at inline carbon filters (designed with a duct port at each end) and a duct booster fan to counteract the pressure drop.
Hi Tri To-no. As long as you are blowing (not sucking) air through your air-cooled hoods you will be fine.
I love you
❤️ I love you too 🌈 🦄 🌙 ⭐️ 👨 👩 👶 ♾ ❤️
One question, should not the filter have a higher CFM then the fan? If the fan is stronger then the filter some smell will get through and out?
+Toste Good question! It's a bit of a chicken and egg math problem this one. A carbon filter's stated CFMs basically says "I can clean air passing through me at X CFMs, no more please." A fan's stated CFMs says "I can move air at Y CFMs when I don't encounter any additional resistance," to which a filter replies sheepishly, "Ah sorry fan, I'm going to slow you down by 20 to 25 percent-sorry about that." You could reasonably conclude that you could get away with using a slightly higher CFM fan (20 to 25 percent) and that, given the air resistance created by the filter, the air would not be passing at a greater velocity than it can handle. My advice, to be on the safe side, is to ensure your fan and filter's CFMs are evenly matched.
It's easy.. Multiply your total room cu ft x 0.75. Why? because filters restrain about 25% of the fan. Then divide that by 3-5 minutes most meaning that the air will be replaced every 3-5 minutes as desired. Then pick your filter size as close to the fan as posible never less and add a minute over due the restrictions, example.
Room
10x10x10=1000 cu ft
1000x0.75=750 cu ft
750/3 minutes=250 CFM needed to exchange the room every 4 minutes, it will in 3 without a filter. If you need more help give me your room specs..✌🏼️
@@smitha2494what if you slightly or massively oversize the filter is that ok ?
Have you used the Hyper Fan temperature controller that they sell separately?
+Rob Yes, for well over a year now. I'll talk about thermostatic fan speed controllers in an upcoming video soon. I'm investing in more of these controllers. Good, reliable kit.
I think it would of been cool if you could of put beams to hold up the lights and fans and ducting and left that beautiful ceiling exposed so you could see it. I really like the wine cellar look . Thank you Ray
ok why would you need a carbon filter? dont wanna bother the neighbors with the smell of basil is it?
jaime delgado They’re fine with the basil, James, it’s recirculating the hot air up to my living floor above during winter that requires the filter. I like the heat but not the garden odours - the carbon filter brings super clean, warm air to my winter living quarters.
@@Just4Growers yeah right...
Does anyone no what size inline fan would I need if I am using 10" hyper fan in 240x 240x 200cm tent with 4 600w hps lights I don't think I would need a 6" or 8" hyper as I want to obtain negative pressure.
+S man Hi S man. A 10" on extraction would definitely provide adequate air exchange, especially if paired with an 8" input. You could even get away with 6 x 600W in that space with the right air exchange - made easier with air cooled hoods of course.
Everest Fernandez thanks for the replys with the 10" would I be okay with an inline fan that has 500cfms it's not hyper fan just rvk of course I need to obtain negative pressure thanks.
Everest Fernandez thanks for replys
Will the 6 inch hyper fan be great for my grow tent? I cannot make up my mind in what fan to get for my 36"x24"x63" grow tent. There's just too much fans to choose from, I really like the hyper fan but I don't know if it'll keep negative pressure that I want. Thanks in advance
Justin Brower Thanks for your question Justin. That's a small tent-about 33 cubic feet. What is your light source? The six inch Hyper Fan shifts 315 cubic feet per minute-allowing for pressure if using with a carbon filter-maybe 240 CFMs at full power. Running at 35% using the included speed controller you're roughly looking at about 80 CFMs (35% speed doesn't necessarily equate to 35% of the CFMs!) - so that would be exchanging the air in your tent twice every minute-I recommend at least once a minute so you're well above that. Just keep an eye on relative humidity (especially at the beginning) to make sure it doesn't drop too low as you're always removing transpired moisture from your tent as well as heat. When your plants are mature and maybe crammed in a small tent ;-), you'll probably be glad you over-specced the fan! Always a good idea to give yourself the option of some extra oomph if you need it.
Anyway-good luck with your grow and I'm here if you need me. Thanks for subbing the channel. Peace.
My light source is a 400 watt digital dimmable grow light kit from iPower, I ordered the 17" cool tube and filter to run it through, I have a 100cfm fan but the temps were getting sky rocketed still, it's pretty humid here in Alaska, so humidity won't be a problem. I'm using my led light until the cool tube comes in next month. I was wanting to keep a negative pressure so I can stick my carbon filter strips on the vents it has made into the tent at the bottom. Great videos by the way, love them. Thanks again for the advice.
Justin Brower Thanks Justin. Sounds like you're having fun up there in Alaska! I've always wanted to visit. Glad you like the videos. I upload regularly to the channel and I'm always happy to give you advice / or at least an opinion! Plus, if I don't have the answer, I know someone who probably does! Peace.
Hello, what size fan and filter would I need for a 2 by 4 by 7 tent for.
I currently have a 4 by 4 by 7 tent with a 4" HO Can Fan with a 4" by 15" 250 CFM Active Can-Lite Filter.
How much r they ?
Depends on where in the world you live.
a good grip of money
Are you growing weed, or why the filter?
+IETCHX69 During the winter I extract my grow room's air to my bathroom and entrance hall on the floor above to help heat my house. My wife doesn't want the whole house to smell like a "garden" though so a filter is important, even when growing tomatoes and suchlike.
Everest Fernandez great. thankx
"What size carbon filter and inline extraction fan for my grow room?" Clickbait. (false advertising) You got me. Good for you. You have 20% thumbs down. That should tell you something.
10 inches =
25.4 centimeters
should have left the open brick. would have looked so much better.
My wife agrees with you.
haha she has good taste. Not that a brick enclosure (color wise) is productive for growing plants your cellar is neat looking minus the Sheetrock enclosure inside.
Heheheh. I promised her one day she can have her original cellar back, but not any time soon!
once every min??? u mean once every 3-5 min
Fatsacks Allday Hey Fatsacks, thanks for your comment. My general rule of thumb was based on growing heavy fruiting annuals to full maturity indoors. Most growers use air exchange to combat rising temperatures (from their grow lights) and relative humidity levels (from plant transpiration) in their indoor gardens-but the other important factor is carbon dioxide. Without supplementation, indoor growers are relying on atmospheric levels-currently around 395 ppms. Plants need eight photons of light to harvest one molecule of carbon dioxide. As your plants become larger their need for carbon dioxide increases exponentially. I sometimes refer to it as the 'glass ceiling' in many indoor gardens. Everything seems to be going fine when plants are small and then development slows to a crawl for the final few weeks. This is most often due to inadequate carbon dioxide as a result of insufficient air exchange.
You may well find that exchanging your growing area's air volume every 3 - 5 mins works fine during propagation and early vegetative growth. Over ventilation at this stage can be detrimental to plants as it can strip the air of valuable humidity and raise vapour pressure deficit too high. But as your plants mature I recommend upping the air-exchange to at least once every minute.
I'd be interested to learn more about your experiences so feel free to chime back in here or take a look at our Facebook discussion group if you swing that way. Oh-and please consider subbing the channel too. Thanks again. Peace and happy growing, ~Everest
You didnt answer the question of sizing at all..
What question did you have Damien? Happy to help if I can.
Everest Fernandez What size for a 5 x 5 feet with 4 plants??
Thanks
Every video keeps talking about efficiency ... I grow weed ffs I can afford the bill.. Tell me if my neighbors will here it
2:46 i dont know what kind of wizard you are but this fan aint gonna hang on the filter with tape no no no there is no way man
I would tell my girlfriend it was a 12 inch fan...
he really seems to be pushing certain products and brand names a lot... makes me suspicious that its just one big commercial to promote products
Sorry Mr Goat, I only mean to be enthusiastic, not pushy.
Your hyperfan looks like crap from China, and there is not even a temperature controller.
And only 2x1000w on this fat room?
You don't need any air cooled hoods with such room... That's a waste of money and lumens.
Just install large adjust a wings and remove your air cool hoods on their air separate circuit... It is not needed.
not a fan of the duck tape
this is just an ad
funkiestoyster I surveyed 1000 prisoners and found that 95% of them liked eating strawberries. But this does not mean that eating strawberries leads to criminal tendencies. Similarly, an informative video about fan sizing has to use SOME BRAND of fans. And, while it may be easy for you, arriving here at the tail end of a long line of causality, to wrongheadedly link my presentation to the promotion of a given brand, the only conclusion you should arrive at is that you can eat as many strawberries as you like, and the worst that can happen is that you get a mild skin rash.
Boy, I like your channel and the info that you provide; but, the equipment that you use is very expensive, especially when a person is just start an indoor garden.
So one has to suspect that you are mostly promoting and pushing certain products because you get them for free to test to promote on your youtube channel, right?
Free advertisement for the manufacture, views and free equipment for you; but, on this side of the screen there just drooling over the equipment that you are installing in your mini profissional grow room, you know what I mean?
Where can I get similar quality equipment that is not as expensive as the equipment in these videos? thanks
Kenneth Elston Hey Kenneth-thanks for your thoughtful feedback. If you Google my name you will see that I have worked within the indoor gardening industry for many years, mostly as a writer and publisher. As such I enjoy good relationships with many manufacturers and wholesalers. That said, I use what I use because I believe it does the job well-not because I'm being paid to mention them. I am a grower, first and foremost-and I've been collecting grow gear for yeeeeeears. Sure I know the right people to call for the best price, but my hobby still costs me $$$$-but it's my passion. I'd be happy to recommend budget versions of any type of equipment you're looking for! Just let me know where in the world you are based and what your goals are. Oh-and don't forget to sub the channel if you want regular updates too! :) Peace and happy growing, Everest.
Thanks for the reply, I downloaded an equipment checklist from your website that I will soon start acquiring the parts. I will certainly take you up on your offer to be guided to lower cost equipment that I won't regret buying or have problems with after buying due to poor construction.
Keep up the good work sir and keep the gardening information coming, thanks for educating the masses.
Kenneth Elston You're welcome Kenneth. Feel free to let me know what sort of gear you are looking for and any budgetary constraints and I'll do my best to help you. Don't forget about the secondhand equipment market too! There are bargains to be had. I don't recommend buying secondhand ballasts though.
Funny you said that; I just visited a local hydroponics store today and they had a few used hoods, ballasts, and light kits that weren't too beat up at an okay price. But, not knowing a whole lot about the brands I didn't want to put my money in anything that I would be wasting my time buying. Plus the guy who was helping me kept pushing me to buy new equipment instead of wasting money on used equipment since I'm just starting out and have nothing but some seeds :-) He was really pushing this $380 600 watt ballast as a good low end to mid-range starting point for a beginner grower. Being the way I am (very frugal with my money); I get cautious when someone keeps pushing a certain product at me; that's one way to certainly have me not buy whatever they are pushing and possibly not shop in the store anymore.
I do have 4 bulbs; 2 HPS 400 watt 2000k and 2- metal halide, 400 watt, 4200k that were given to me free by a friend who knows I want to start growing tomatoes and peppers indoors. Living in Alaska, we have a very short growing season if any at all. So, I thought that since I had the bulbs, I would just have to buy a hood for the bulbs a fan and get to growing. But, the guys at the store I visited today told me that I am still $500-$1000 from just having a complete light kit, WOW!
In a way it's getting kind of discouraging when I look at just how much it's costing to grow food indoors. I was trying to get into a new hobby that's healthier and cheaper than my gun buying and shooting hobby. Gardening is ending up costing more than my shooting hobby :-(
Kenneth Elston Hi Kenneth, you don't need to spend that much on a ballast. For around $250 you can buy a Galaxy select-a-watt electronic ballast that will run 1000W, 600W and 400W lamps (metal halide or HPS) - as you are just starting out I recommend buying versatile equipment like this. Just get an entry level / secondhand reflector to begin with and you can be up and running fairly economically. The Galaxy Digital Logic series have a built-in timer too which saves you money on timers and relays. Your ballast is the 'engine' of your grow room and is worth investing in. The rest you should be able to get together pretty cheaply on the used market.