I use 2-150 watt HPS lights. I think they work great & they were cheap. I will upgrade to a 400 when I move to the new house. BUt the 150's been working for me now for a couple years.
NOte the STELLAR growth from pic 3-4. That was 9 days
Up till then I had just used the 8 t-12 floro tubes you see on the ceiling of the cabinet. I was VERY impressed with what I saw switching to the HPS even at only 150 each. Im sure I will be more impressed with a 400 or even a 600.
p.s. this was Nirvana fem bubbalicious. EXCELLENT smoke. Very stinky & awesome high. I am certainly going to grow this one again & keep it as a main stay of my collection