hey, not posted on here for a while just popped on for a looksie at what people where doing and thought id drop a couple tips in.
its a bit late now but when you start again you would probably be better of doing seedlings/cuttings under a 125 watt cool white CFL, a 400 watt hps is a bit overkill for new plants and can cause stress and damage, plus the 125 watt cfl's dont emit much heat which means they can be placed much much closer to the plants without damaging them, also you might want to find a smaller growing space or build something inside your current one for seedlings and paint it matte white, so the plants get more light from reflection with no extra power required. the 400 watt hps will be good once they are a couple weeks old and arent so fragile, and you will want a cool white bulb for vegative growth and then a warm white bulb for when they are in flower, or you can get a dual spectrum hps so it doesnt need to be switched but as far as my understanding goes they dont put out as much blue/red spectrum as the cool/warm spectrum bulbs do