Yeah I think I would raise the light as far as possible till the plants get older. Ikeep my 1000w at a minimum of 24" from plants in flower. And yours are in veg still. I like using T5's for veg.
killerweed420 Reviewed by killerweed420 on . Plants struggling I have three 12" plants 30" under a 1000 watt MH light. They have been struggling ever scence I moved them out from under the floorecsent lights. They are in a 3x3 flood and soak tray. The room is 6x6x8 high with a 400 CFM fan vented out side. The room stay bettween 64 and 68 degrees and he humidity is in the 50s. I just finished my second resivor change in four weeks and ran clearex for a while. Now running pure pro grow, pure pro bloom, cal mag, liquid karma at 1200 PPM and the PH is 5.8 to Rating: 5