Man Its only a 150w HPS, I know its HPS, but your 4 bulbs you have put out about the same lumens, and that why I added the 4 bulbs you had. I gotta 600w HPS/MH combo being delivered tmw tho...GOing to get rid of 150w HPS, and turn my lil setup into a veg cabinet with either CFLs or T5s.