I guess what I'll try first is to use two fans, to draw air from one of the lower tent vents, through ducts, through the Growzilla flanges and out through one of the upper tent vents, and throw in an oscillating fan or two on top of that to keep the air moving (heard it stengthens the plants too). If that doesn't work I'll go for something more heavy duty.My Growzilla has 6" vents, which I have hooked to a 463cfm exhaust fan. I have some trouble with tents because I can't vent the heat outside of the grow space right now, so I use AC and keep the temps from 78 to 82, which is acceptable to me.
I thought 82F was an OK temp?