Right now i have two power compacts on my ten gallon tank. one is 36 w and the other is 24w. i was reading alot of posts on here and i noticed alot of people with ten gallon or twelve gallon tanks had 70 watt metal halides. But when i searched online for them i really didn't find many... at all. where did you guys get yours? and is it possible to make one? i've got not much money. thanks