Pro Grow 260X from Hydro Hut. I also have one side with a T5 HO 2-bulb, and the other side has 2 DIY-wired light bulb holders with Y-splitters, so 4 CFL's. I am planning on buying a 4-bulb T5HO to replace the CFL's to save probably 2-4 inches on that side. I have learned that every inch of space is valuable when growing in a limited space!