VPD is where its at ...you haven't seen these plants do anything until you have kept them in their sweet spot ..they just explode !Go look up" VPD scale" mate. Vapour pressure deficit. Basically about how to keep the humidity relative to the temperatures for optimal growth. High temps are ok if the rh is balanced to suit so you might be able to get away with just turning it off.
I get over 30*c for most of my summer growing and it rarely bothers them.