I have virtual sun 4x8x7" grow tent I have 2 600 watt hortilux bulbs 2 sunsystem 6"air cooled hoods a vortex inline fan cooling the lights my temps stay at 75* with the lights on and 64* with the lights off . I'm growing in ff soil 12white widow in 2 gal pots using there nuts line . I put 12...