iight thanx, i have herd that you can make different layers of plants by building "shelfes" and putting the different stages of plants on the different shelf, Ie Flouro on top, MH in middle for vegitative growth and somewhere els for flowering period with HPS. have you tryed this method.

Anyway... how does the method you described work for the flowering period if vegitative plants are mixed with flowering, do you use Mh and HPS at the same time?