LOL! Ya got that right Blunter...I have a 400w with both a MH and an hps bulb...both very bright and run pretty hot too....sure grows nice stuff tho...:smokin: The hps makes my adjacent rooms look like a setting sun is in my house all day long...it's gonna have to be a pretty big closet to absorb all the heat from a 400 without some cooling, so I'd worry more about cooling the room than re-wiring it. Duct work is harder to hide than wire, and fans make noise and also require some electricity to run... A simple bulb socket to receptacle adapter is all you need to power your light if you have an existing fixture tho... :jointsmile: