zandor, how far shud i set this light up from the plants? i have all ages in there from seedling upto 4 weeks. is it 18 the same as hps? the light gives out 19000 lumens. ive just set up a seperate room to do my vegging so i can use the hps just for flower. im starting 12/12 on 2 k2`s tommorrow from 10am to 10pm. thanks again