Hi Joe,

In the bottom, I have 2 x 24" daylight floros, plus 3 screw in sockets for CFLs. The problem I ran into was using a mini-green house in the bottom, too tall. I can slide it in with the CFLs in, but I would have liked to have about 2-3" more room. I also got a shorter greenhouse lid for new seedlings so I can raise it toward the lights to prevent stretching. If I do clones, the regular greenhouse will probably be cool. I need to add ventilation in the bottom, going to use passive vents and an exhaust fan of some kind.

On your box, how stealthy are you trying to be? I can tell you, mine is loud and a cabinet just over 7' tall isn't what you'd call inconspicuous. Since you have a carbon filter in your design, I'm guessing your concerned.. Are you thinking the carbon filter set-up is going to adequately cool the main chamber?

Peace, Rich