if you go icecap you will cut the watts down to about 280 for 4 bulbs, not sure if you were going to go more then that. icecap boosts a 36watt bulb to about 55 or 60 watts. you do tend to burn a little more on the whiter side though. like my ati blue+ bulbs look less blue then they do in my noraml ballast. not that it really matters im just letting you know what to expect. i use 4 bulbs run on icecaps 660, and 2 bulbs for sunrise/sunset on a workhorse5 ballast (normal output). i think total watts is around 320 or so.