Just got my light today. Ya i know HoodDro, i have a 6"inline fan and charcoal filter but thats overkill for this and will also not be stealth which is what i need at the moment. Kaptain, thanks for all your help. I am going to run a oscillating 6" fan inside, should i still run one pc fan intake and one exhaust or passive intake with oscillating fan and 2 exhaust? Sorry for all the questions. I decided to build my own cab, went to lowes today and got some 2x2's and MDF. I'm going to line the inside with reflective mylar. I'll scrog i guess haha..i'm just being impatient with the veg time involved but i think my yield will be so much better if i let it fill a screen. My cab is going to be soooo small i'm nervous. 21" wide, 19" deep, and 4 feet high. I don't even know if I'm thinking logically with such a small space....