the ONLY way to combat the heat is either of these 2 options. 1. run a dedicated a/c unit (portable or mini split), or run co2. and x3 on pics. I highly doubt you can possibly run that many lights in a 2x2x2 foot or meter tent. even a vert set up would cook your tent like a pizza oven. I run an 8000btu portable a/c unit in my flower room (5'x10'x6.5') n kept at a stable 73* lights on an lights off temp. a/c only runs when lights are on.