Or you could get a hps ballast and reflector combo and get a metal halide conversion bulb. Thats what im doing in fact. I decided to order the yieldmaster 400watt system from thegardendepotinc, for well priced conversion bulbs look here hxxp://www.plantlightinghydroponics.com
I have heard people that irrigate rockwool cubes with a solution water/root stimulator before inserting there seed. Anyone have experience with this, and know a good brand ?