Ventilation and Carbon Filter question

Ok so im building a 2x2x2 stealth grow box and am trying to make sure I get the smell under control when flowering starts. I think I have the math down but am looking for approval.

2x2x2 = 8 cubic feet
8/3 = 2.7 cu ft. (Divide by 3 since that's how many times u want the air filtered right?)
2.7x.20 = .54. (You add 20% since ur adding a carbon filter?)

2.7 + .54 = 3.24 ABSOLUTE MINIMUM CFM

I know im prolly over thinking this small box but I DO NOT want any small smell of a skunk

And here are the fans im thinking of getting

http://www.newegg.com/Product/Product.aspx?Item=N82E16835608026

http://www.newegg.com/Product/Product.aspx?Item=N82E16835185068

And thnx guys your help is greatly appreciated!

PC fans wont push air through a carbon filter with enough efficiency to cool your room as well. so unless your light is sealed and cooled seperatly i dont think those fans will work verry well.

try looking into something like this

http://www.amazon.com/LEDwholesalers-GYO2402-6-Inch-Hydroponic-Booster/dp/B003YFADW8/ref=sr_1_1?s=lawn-garden&ie=UTF8&qid=1358273141&sr=1-1&keywords=booster+fan

this fan will cool your room and push through a small carbon filter. i use 2 of these and people say booster fans are junk but this exact fan has lasted me over 2 years on one and i ordered another about 5 months ago and they push some serious air man.

and the booster fan is the same price as that dinky ass PC fan you want to get,

Idk but the site says those fans are out of stock and discontinued...

Ahhh there we go retiredmatt those fans look pretty good! And I see that it just plugs in which is great bc I didn't wanna go out and get 12v adapters and rig em up to the cpu fans! But stealth and smell are really my main concerns not yield. Is that fan loud?

Makelovin420 said:

Idk but the site says those fans are out of stock and discontinued...

Click to expand...

Well I was doing a little research and those cpu fans re suppose to be really strong and quiet at the same time. And considering my grow space is pretty small I thought they would be fine but don't know if it will work well with a carbon filter