Ill even throw in a lighting question, how generous of me, hehe, Should i just use a couple 40w cfls on tops of the plant? or should i use a longer tube? i could get a couple 48 inch tubes and then get like a 5 foot chain and slowly raise it with plant growth on a hook, the plants wont be to far from the wall when they start growing, probably when they start branching off about kept 4 inches from the wall and monitored regularly, so they will absorb the light from the walls, the walls are a white so they reflect it very nicely. Also wondering about HPS, are they hard/expensive to get one of those ballasts or w/E? or is there something else that works just as nicely from a socket or an easy to get socket? I dont know what metal hallides use