Ya i just made a small box for 3 plants. Didn't have anything to coat the walls so I just thru some foil up there for the time being... and hot damn did it get hot! wnt from a 75-82*F to 99 in an hour! I flat out panicked, ripped out the foil like I was digging thru rubble for my child. it was a bad moment. I need better venting tho. i just made this small box for starting a grow, nothing permanent. its a 2ft triangle with 2 CFL's split at each corner for a total of 8550lumen. again, nothing fancy, this is as much for my enjoyment in growing and experimenting as the end product is for smoking. I'll start a thread. It looks like an extreme ghetto pandora's box... arc of the covenant... thing. and with that foil lined in there it was like looking at the sun! lol I mean, I know a solar oven when I see one, but I was just hopeful that little fan would put out.. i'm an idiot.