four 26 watt bulbs and ten 47 watt bulbs all 2700k. I know a 400 watt HPS would give me way more lumens but at the time I couldn't get to a grow shop since the nearest one to me is 1 1/2 hours away and I was also concerned about the heat issue. I don't want any choppers flying over my house and seeing a large red spot in my closet, know what I mean? My CFLs ran so cool I could hold them to my cheek and not feel ANY discomfort. I had two small computer fans running air over them 24/7 to keep them way cool. I am going to upgrade to some 432 watt t5 setups that boast 97 lm/watt which is up there with MH and HPS (Not the 600w or 1000w hps tho, 120-140 lm/watt there.) I plan on doing four plants, two plants to a light in a DWC recirculating SCRoG setup. I am going to try and order 4 different strains so I don't get too smoked out on one.