Not a real good describer of my ideas, but I have a 3-D design program so I decided to use that. I already have most of the materials to set this up, besides the Co2, some duct work, the lights, pots, and soil. I'll be using NASCAR brake cooling fans for the intake and the exhaust. These things are pretty sweet, they run on 12 volt so I can use a computer power supply to wire them. Got em off eBay for around $40 shipped to the door for both of them. Each are around 450 cfm. The picture isn't an exact drawing, I know hot air rises. Anyone see any problems with this design?