Homer -
Can you take the canopy off and take pictures of it and the tank.
Man, if we lived a little closer (like in the same country) I'd build you one and ship it to you. I guess I still could. Just not sure about customs, etc.
Another member, customdrumfinishes, just finished a small stand and custom canopy for a small hex aquarium. He has some great pictures of it here:
http://www.plantedtank.net/forums/di...tand-hood.html
If built correctly, I think that heat buildup from a canopy wouldn't be an issue for you and you might even have to add a heater to keep the temp consistant.