PC fans

[LifetimeSmoker]

Well I got my pc fans and they suck ass!!! They barely suck/blow at all....So I'm out 20 bucks but you live and you learn....Now I need to know a sure thing the box is 2' X 2' X 3' I have 8 cfls and it got about 100+ degrees within 15 mins so i need to figure out what size fans to get for intake and exhaust fans as well as 2 fans for the carbon filter I will be making....So here is my question where, and what kind of fan should I get??

[halosin8r]

well... im guessing your using 6" 12v (square) cpu fans, right? what power source are you using? are you doing 2 pc fans per 12v adapter or...?

[halosin8r]

my b.. just read the other topic in this forum about it. so Im guessing you have your power set straight.

if you need more air, i recommend you look into duct fans.. hardware stores sell em around 15-50$ depending on size

[LifetimeSmoker]

OK well I found one at Home Depot and was wondering what the CFM should be for my room size... the one I found has a CFM of 80 will this be enough?

[pastor420]

The general rule of thumb is 5 air changes in your room per minute. So you would take the cubic feet of your grow room and multiply it times 5 to get the minimum CFM you need. If the cubic feet of your grow area is 16 or less, than yes the 80 CFM from HD will work.

Additional things that will decrease the CFM of your fan are long duct runs and filters. If you have either of these you probably want to add another 15-20% to the total CFM needed.

[oturbojoeo4o]

the fan i bought from lowes...was 6 bucks and it has 2 settings...both are very quiet, my temps never go above 87ish

its called "space saving task fan" made by lasko

looks like a lil turbo like my avatar, check out my grow in my sig and its like the first couple pics ull see it...makes a nice negative vacuum, suck my door shut :)

[LifetimeSmoker]

Call me stupid....But how do I get the square footage of my box?? Must have been too stoned during that part of math class. it's 2'X2'X3'......

[Tokudai]

2x2x3 is 4 sq ft (if the 3 foot is height) and 12 cubic feet. Theoretically, 80 CFM should work fine...