It cannot hurt to ever have an exhaust and an intake in your tent. I know that growing in those tents it can get extremely hot thats why I prefer cooltubes while working in tents. You should probably check on how to build your own, or you can buy one from a local hydroponics shop. They work wonders, my buddys two skunk plants where so big that they were touching the cooltube and they still never got burned.

I think cooltubes own all when it comes to heat issues. Just my 2cents.

Good luck