If I wanted to supplement lighting on the side branches for plants that are already flowering under a 600watt HPS what would a cheap but effecient solution be? 42 watt CFL warm-white; 100-200 watt CFL warm-white, or what would be my best bet?
Depending on the size of your area, I would either buy several large watt cfl's (maybe 125w) or several sets of shop light floros. Hell use both if you have the room. No such thing as too much light.
