Two 400 watt MH / HPS magnetic ballasts with small reflectors. One four tube T5HO 54w. For both systems I have various lamps for veg and grow. Now I'm finishing with two HPS and Bloom Cycle T5HO tubes.

I start with either a 2x4' T8 shop-light, the 4x4' T5HO or 2 CFL spot reflectors running cool white CFLs in 26w and 42w. Add additional light as needed during veg and flower depending on the number and size of the plants. I crowd them right in sometimes.