Booster Fans

justiceman

justiceman

Active Member
Hey guys I am have a small closet grow going that is 5 x 2 x 8 with a 400w hps that has 6 inch flanges. That equals out to 10sqft and 80 cubic ft. I heard on a grow room calculator that I would need about 74cfm for optimum ventilation. But I have heard of 400w users using 270cfm+ fans? So I have been looking at some "booster fans". They claim to have generally 150-180cfm. They also claim that they shouldn't be used alone. why can't they be used alone? They are a cheaper alternative to buying a $150 inline fan thats 400cfm.

My main questions are.

Will a 150-180cfm booster fan be enough to ventilate a 5 x 2 x 8 room with a 400w hps?
Would a booster fan be quieter then an inline fan?
Is a booster fan strong enough to ventilate by itself or will it just break down?
Would it just be a better idea to bite the bullet and shell out an extra $100 for an inline fan?
 
Green Cross

Green Cross

Well-Known Member
justiceman said:
bump. 47 views and not one reply. someone please lend me your knowledge!kiss-ass
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Better to shell out the extra dough for an overkill in-line fan. My space is the same size as yours, and I had no problem cooling it (with 400w) with an S&P TD-200x. great fan, and quiet. Run it on the low speed, and wrap it with some insulation, and you'll forget it's in there.
 
P

pokesalotasmot

Well-Known Member
Booster fans don't have the power necessary to draw air through carbon filters. Thats why they are "booster fans".

I have two 4 inch booster fans I picked up from Home Depot, and they are quiter than my inline fan, but they also don't move the same amount of air an inline does.
 
S

SaRaNaC

Active Member
i have a friend growing with basically the same set up, 400w in a small dark room tent. He just uses a 120 volt 120mm computer fan and i guess it exhaust the heat good enough. But one Oz could pay for a nice Vortex 4" fan and put a Phat filter on the end of it.
 
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