SWEET...that should bring them on nice..are you gonna use both type's of bulb or just the hps????as mh is better for veg growth..how big is your growroom??i've just upgraded from a 400w street lamp(an it did me proud!!)to a proper 600w growlux with a dutch barn reflector.lot of saving for me that was as i don't sell any of my weed!!just 4 me an the wife!!love an respect SPLIFFBUILDER.