he's right...cfls are the way to go...i'm not sure if he means 150watt or 150watt replacements (which are actually about 40watt, maybe a lil less), either way yea...keep them about 3-4" from ur plants or they might burn...i had some burnage on my last batch cuz I didn't move the lights farther away for about a week...CFLs CFLs CFLs = cheap, easy, productive