Here it is, finally done, and lighting up some plants as i type. My basement is not part of my living space, more of a cellar/ storage area. I've framed in a little room (or big closet) in the back corner. I used gypsum board (drywall) for the inner walls, insulated the ceiling and part of the walls, and lined the inside with panda film. I have a piece of pegboard (I think thats what its called? thin board with holes in it) with furnace filters taped on the back, then screwed onto the wall as my intake. My exhaust is on the ceiling opposite to the intake, a 6" carbon filter and inline fan. My circulation fan is a 20" oscillating wall mount fan. I have a board with a dpst timer and four each of 120/240v outlets, but for some reason the timer isn't working anymore. I still get power though, so I'm using plug in dial timers to run the lights and exhaust fan for now. I have one 1000w hps hanging. I have transplanted my six plants into 5 gallon pots, and they are sitting nicely under 1000w tonight, coming out of a little cfl grow box. They will get 14 hrs more light, then 12 darkness... onto 12/12 we go.
Please update this thread with more info and progress pictures!!! Planning on doing a six plant 5x5 myself!