M plants where planted on 3/16 from clone. so they are a little over 6 weeks old. im feeding them gen hydro maxigrow, at 600PPm 1 time per week. growing in pro-mix. 18/6 lighting with shop lights, t12's. My PH is being adjusted with PH down to take it from 8.3ish to 6.3-6.8. Temp in the...