Lighting setup

[robbyville]

As mentioned above, the biggest thing I learned when designing my canopy was:

Keep the back open as much as possible, even if it means more light splash on the back wall

Keep the fan holes bottom of center, you don't need to cool the bulbs but draw out the air below and cool water

Have both fans blowing cool air in, and let the heat dispel from the rear (No pun intended)

My canopy is not perfect but even in the heat of this summer with no air conditioning I was able to keep my tank at the highest 80deg but mostly 78. This is with a 60 gal with no remote sump. On extremely hot days I also ran a clip on fan from the back of the canopy. If you have a larger tank with remote sump I think that you will have minimal problems with heat if that is your main concern!