I'm using a 400watt hps w/ an MH conversion bulb, its 24in. above the largest pots, the smaller pots are growing great but the larger one's seem like they are not growing, should i move the light closer so the get more light...the temp is always b/t 68-74 degrees at the surface ot the large pots, should i bring it closer or just let them go...here's some pics
