i second what justaseed just said. I just put a 4inch exhaust fan in my closet (rvk fan- closet about 130cm-60cm-210cm). It does make a bit of difference but not much, i still cant close doors fully even with the fan running. Well not if i want my 400 watt light about 8 inches from my tips. temps with door closed gets over 30c which is bad. looks like i must buy another fan too.
greenmonster Reviewed by greenmonster 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