i have a 1000w HPS light, hood and ballast and all. But i only have one plant that needs it right now, the other bastards ended up being gentlemen. but anyway, i dotn want to possibly spike the electric bill or to even use that much power. could i buy a lower watt bulb, 400, or even 150, and plug it up to the 1000w ballast. or will it blow my face off? could be a dumb question, but you never know. thx anyone.