1.) buy an inline fan. 2.) Make sure your INLET's are twice as big as your outlets so you dont put stress on your fans trying to suck the air out (think of how hard it is to suck air through a straw thats what your fans would have to deal with) 3.) Calculate your the space in your box and then buy a fan that has the ability to remove the air rapidly enough to cope with your light. 4.) There is a search button use it, you could of had the answer you needed solved before you even started. 5.) Please dont +rep me, just remember search is your friend. 6.) Good luck with you grow!
