i got a 180cfm kitchen exhaust fan from home depot for about $50 and mounted it on the back of the box. you can get 70cfm ones for like $12 there too! if you just mount them on the back or top of the box and connect some 4inch tubiing to the exhaust so it loops around a couple times you get a lightproof exhaust fan without much trouble at all
justaseed Reviewed by justaseed on . New Grow in a Box! Peace to all. I wish the Dead would tour again-anyway I am transplanted to the great North West and I am looking to see if the following will be the best set up? This is also my first indoor crop. Grow Box 4x4x6-Air Cooled 430 with a SonAgro bulb,lined with mylar. 4" fresh air at the bottom of box(intake) and exhaust out the top. I am thinking of using just a 4" duct fan for the light and a circular house fan for inside the box. Will I need more suction to bring in fresh air? Do I Rating: 5