Im going to have to agree with completly stoned on this one. Get a 400 watt hps maybe even a 600 watter if you can. Put that bad boy over your plants for a 12/12 cycle and I can give you the budman guarantee that it will double, if not triple the yield you would get with the crappy light it has now(no offense). Good luck and happy growing!!!! Oh, and by the way, I really strongly suggest you get that light or you might be a lil dissapointed with your final product.