I've been reading threads about l.e.d. My thoughts on all this is get your veg time done with alot of l.e.d, and about 1200 lumens fluorescent. When it's time to bud em out, blast em with about 600 hps more. I'll let yeall know how it goes. Trying with soil on 1st run of this project, and hope to move to bubbleponics with whatever tweaks to the light system I come up with. Your plants like the radio. Dont ask me exactly why, maybe soundwaves keep soil just right for roots? Take it easy guys