Grab you an air cooled hud, and a ducted fan and exhaust. Run that heat out of the tent. You'll be able to put your light much closer. Usually bleaching and heat go hand and hand and it takes a lot of light to cause bleaching. Bend your branches dude, every branch that is getting taller than another, pinch the branch between your fingers firmly, almost crush it and rock the branch back and forth carefully at the pinch spot and keep doing that till you have an even canopy and when monster cropping defoliation is very effective.