Monster-Cropped Green Crack Clones

Today is Day 36 of flower. I bought a new LED and tent and I moved everything today. I've been fighting high temps during the day with my HPS and low temps after lights go out. I had a heater with an Inkbird in the tent but it was cramped and didn't feel safe with it in there. So now I've got a bigger tent with more space for humidifier and heater. Also, in my one picture, I'm seeing some odd color. The leaves are yellowing but also getting a pinkish color to them. I flushed some 6.8 plain RO water through them and the runoff was at 7.1 I fed them at 6.0 and will keep it between 5.9-6.0 for the rest of the run to hopefully get the pH down a bit.