I know the power supply isn't an amp...I'm not all that new to the whole electrical things. Its just one of those things I like to be 200% sure on. Well I found them for a good deal and kinda impulse bought them opps.. So their mine and I gotta make 'em work.. But I have a bunch of them so I can always add more.. If needed. I really need them for intake and exhaust fan (hopefully the carbon filter too) as my box got to 100+ degrees in under 20-30 mins... so before I put anything in soil I gotta fix that..Now I need to find a place that sells the dark room vents, or something will work to keep the light in. and about the carbon filter should I vent it inside the box or run some ducts to vent it to outside the box.