ummm, the better the light the better the bud, HPS is a high pressure sodium great for flowering stage. i wouldent personally go lower then 400 watts. i use a 600 watt silver light wing HPS and im growing 2 plants. im gonna buy myler and thats 95% reflective (on light its special and dont reflect heat) rewmember dude, no matter what these guys tell you, its ur 1st time, theres a good chance u will fuck up and theres a 25% chance ur gonna quit coz of fuck ups. dont spend too much cash if u think u may jump out dude. stick with 400watts, coz if u do grow a good 2 plants i can promise ur gonna grow 8 next time, u can grow 8 under 400 watts easy, 12 pushing it. keep posted dude, i dont read these forums much coz u have a lot of wannabe growers giving advice and they can fuck up ur grow. try and find some 1 to add on MSN, some 1 that aint stupid.