I've been addiing lights weekly. Mostly 2700k sinve I went 12/12, but still have a couple higher spectrum bulbs. I used splitters on each socket to double up on the lights. I'm going to get some clamp lights with splitters today so I can adjust them a little more easily. Adjusting the lights is a daily pain, but I guess it's all part of a CFL grow. I do have a 70 watt HPS light but it's not wired up. My ceiling is about 9 feet, so I guess I'll keep waiting, and keep buying lights. It's bagseed, but it was some killer stuff. Good enough to prompt me to plant some. I only got three seeds out of 2 ozs.