So, my set up is a 48"x48"x79" tent, 600 watt mh cool tube exhausted by a 6" ventech, 240 cfm. Running 20/4. 2 five gal totes, a 6x3" (northern lights special- reg) & a 2x5" (white skunk- fem). Now 12 days from seed. They're in 1.5" grodan rw cubes w clay pebbles, running 3 part jungle juice w goldentree. 650 ppm, 5.7 ph both stable. So my question is, would it be better to run the light @100% w my temps floating around 82-84 f, sometimes hitting 86f, or run it @ 75% w my temps @ 73-77? & at 75% I'm able to keep my rh right around 60%. I've got the tube at 15" from the tallest seedling. I've also got a 300 watt full spec led about 75cm @ closest point, but I'm not very confident in the quality of that particular light.