well i did find my own answers.... thats what fucks me up..... cuz i have about 10 compleatly diffrent answers for the same question .... the problem is i cant just go ask all those source's if there correct.. so i post my thoughts and see if someone who knows what there talking about says " one of those things is right"

EDit: hps in small spacE? = burn down the house? i thought those lights where hot + big which is the opposite of what i need