well, here's my setup, and it's MINIMAL...I'm not growing hydro, I'm using soil, it's balanced and intended for african violets, promotes their flowering...I got it at wal-mart because it was very cheap...my little babies grew right away in that shit...I'm growing 2 plants under ONE 42w flourescent light, I'm pretty sure it's cool white light...says it looks like 200w incandescent...one has grown over a foot tall in less than 5 weeks...I've been using miracle-grow, which I really shouldn't because the soil has slow-release nutrients...I recently flushed out the soil because I was suspicious of too much ferts, and now they look great...the other is a polyploid (grows 3 leaves instead of 2 at a time)...they're really doing good, growing secondary branches at the nodes, and I've topped them...I just keep them in a corner in my room behind a guitar amp where the white walls reflect light...they seem to love it...