yo i have kicked ass w 150 watt hps light plus i use cfl supplmental lighting along w 2 t8 lights! i have never yeilded under 3 ozs per 2 ft plant 3 ft i get 4 ozs a qp! I use earth juice,superthive,age old organics,alaska fish fertz,i use organic soil phd' if u have dolite lime for your soils...