So Ive been seeing temps up to 84 on the hotter days in my nanocube 24dx. I replaced the fans with higher output ones, which also came with the higher volume. Currently its 2 everflow 60mm that I found at microcenter, 12 each. Anyway I wasnt happy with the flow out of the exhausts right above the fans, so I got an idea to switch them around and effectively "pressurize" the hood. Now the flow out of the old intake vents is alot better than what used to come out of the back. Im also thinking that it will help cool the tanks too by the Venturi effect, since they share an "intake" the air rushing out from the fans should carry some air over the top of the water as well. Well see how it goes, especially in the warmer months, but Im happy so far.