smokedogg63
Well-Known Member
Ok. I got a 400 watt light with reflector and balast. I am going to be using part of my un heated building to grow. Wanted to build a 3x3x7 plywood box with 4in exhaust fan. will be using ona to help with the smell. What is the smallest box i can build using the 400 watt light and not burn my ladies.