Yes! It's possible :) !!! ..I'am running a 250W MH in a DIY Cool-Tube (Bake-a-round tube) and running 3X 3.7" CPU fans (+ Blue LED's) :) wired to a 12V transformer...I also have a separate 4" In-Line fan, 4" Odor Soc and 4" Carbon Filter to deal with Odor control...but whilst both are running...