My temps have hit close to 85 at times this summer, but I am running 2 large fans across the tops, with a portable ac and 3 exhaust fans about 200cfm each.
3 weeks ago I added a 2.5 ton ac system with constant fan pulling the return from another area thats 1500 sq feet with 2 garage doors and loose walls. There's tons of fresh air comming in.
I set the stat around 76 and my 1000 watters HPS are a bit high for some. There mostly mothers. I havent gone 12/12 on anything since may. Just trying to keep them going at 18/6until the fall.
There are 2 rooms holding one at about 84 and the larger room at about 79 near the lights
Problem is I cant clone like this right now they wither away. I've tried so many fixes that many have stunted, and others have stopped growing.