None of the heat can escape, the pc fan will do a lot if you have two, intake and exhaust. I made my box that is like that one, only I have 6 60 watt daylight 6500k, and one 100w warm white 3000k bulb, with the intake fan blowing on the bulbs, and directly across on the other side of the bulbs the exhaust fan blowing out. I can grab anyone of the bulbs with my hand after burning a week straight. If I can touch it my plants can too. if it still isnt cool enough add more fans, kinda like building a pc
9mmpistl Reviewed by 9mmpistl on . grow box is 160 degrees + in under a minute. please help Hey so i currently have a couple seedlings growing under some lights in my room. http://img253.imageshack.us/img253/5385/dsc00135rw2.jpg i have a grow box in some room in the garage. Its a transparent container that i painted white on the inside, and then hooked up 2 bathroom light racks each with 3 spots, and a hundred watt max per spot. http://img227.imageshack.us/img227/7735/dsc00130rv2.jpg http://img511.imageshack.us/img511/545/dsc00131nz1.jpg Rating: 5