im doing dwc my medium is just rockwool starter cube and then into a 3inch rockwool slab into the netpot i dont really like clay pellets one of the plants the purple haze #1 has 2 nice long white roots i only feed the bottom inch of rockwool so the roots grow nice and big and the other the root is lookin just as good i got the netpot about an inch away from the water (RO water 8ppm no nutes) the light is a 150w hps and its exactly 17inches away from the plants. i was wondering if u guys think i put the plants into the system to early? any tips or suggestions wud be great