Check out all the wattage I run for mine now. Started small then added a bunch. I have them on 2 surge protectors and plugged into my wall. No problems. I just vent the hell outta it, 3 fans in, and one big ass fans fulling in fresh, cool air. I never get above 75 degrees. Click on my signature to see what I started with, then what I bumped up to. But you will be fine as long as you have good ventilation. Lowes has 65 watt self ballast CFLS for 16 bucks. Those are worth checking out if you are running outta room with all the smaller CFL's.