Quote Originally Posted by UMrocksmysocks
get the area of your grow space... 7x5.5x2.5 so .. w hat... like 96cu ft. id go with something from 400-500 cuz you wanna change the air 3-5 times a minute for good circulation,,

look around on this page http://www.bghydro.com/BGH/items.asp...atus=0&Tp=&Bc=
thx man, i ended up gettting a 700cfm fan with a carbon scrubber