i just finished a grow in a very small space and all i used was 8 23w cfl's. my box was about 1' x 2.5'x 5' tall. the plants were kinda short because i tried to scrog em (that didnt go as well as i'd like) but they've got some really nice fat punky buds and i'm guessing once they're dry, i'll get about 2 to 2 1/2 oz's. the bulbs cost me $20.00 at home depot, the electricity is included in my rent, and the quart of white paint cost me about $5.00. oh yeah...the timer and the power strip were about 15.00. I just cut em down so i'm hopin they'll be dry and ready to smoke in about a week. ( i'd love to post pics but I dont have a camera) that'll be my next investment. So you can really grow some good smoke on a budget. your's look good so far, I cant wait to see more of em