Fans for stealth box

DerKiffer

Active Member
You need more CFM from a fan than that one could provide. With CFLs, try to make sure that all the area in your grow space can be rotated two to five times in a minute (CFM means cubic feet per minute). Aka, a 2x2x2 box needs something that's at the very least 16 CFM. More is better. Also, you really only need two exhaust fans and just use holes for intake. The exhaust will suck air in the box and then exhaust it (passive exhaust). Make sure the exhaust is at the top of the box, because heat raises. Also, put your intake on different sides and make the intake holes slightly bigger (33% bigger would be great).
 

weeb

Active Member
You need more CFM from a fan than that one could provide. With CFLs, try to make sure that all the area in your grow space can be rotated two to five times in a minute (CFM means cubic feet per minute). Aka, a 2x2x2 box needs something that's at the very least 16 CFM. More is better. Also, you really only need two exhaust fans and just use holes for intake. The exhaust will suck air in the box and then exhaust it (passive exhaust). Make sure the exhaust is at the top of the box, because heat raises. Also, put your intake on different sides and make the intake holes slightly bigger (33% bigger would be great).
cool. thanks man. where do you suggest i get said fans?
 

DerKiffer

Active Member
Well, if you're running CFLs, you could get some 120 mm fans that are 28db (quiet) and under with about 50CFM each from a computer store for cheap ($20 at most, check actual computer stores and not Office Depot or the like). Also, an oscillating fan would be great for plants as it builds stem strength, keeps temperature in the box down and keeps air from getting stagnant (which can prevent certain times of fungi and infections or something (I've never grow marijuana, so I can't say exactly, but I've read it's much the same as growing tomatoes and what not indoors, the growFAQs here are great (even if you don't grow cannabis, they help make the nicest grow boxes ever (much better than some commercial ones))).
 
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