White Rhino Auto's octopot grow

Day 29 defoliation on both lights raised another 4" these two are growing rapidly. And after defoliation they both perked up there leaves are not so droppy. Day 30 doing well Day 31 defoliation again on both they are growing very fast at this point. 16" tall both plants and both stalks is getting very huge on both and I notice just 2 hrs b4 lights out she starts to get droppy. Rh 45 temp.77 ppm 730 ph 6.6 and raised lights 16" away getting 620 umols