Quote Originally Posted by bigsby
I suggest that you investigate hanging those lights vertically. You will gain significant efficiencies so you won't need as many lights, yields will be higher, fans will be smaller, and you have the space. If you go that route be sure to get cool tubes that allows removal of the reflector.
Now when you say I won't need as many lights if I hang them vertically, if I positioned these lights absolutely perfect, how many could I get away with? Right now I'm looking at 6-7 1000w (I assume that's as high as I can go) HID's, but I don't know whether it's gonna be MH or HPS. With seven lights, the ducting is gonna be crazy.