Snipe:
I have a CPRBak Pak and it hangs about 2 inches into the tank. I have a similar issue with a canopy and trying to find lights to fit - I am on the verge of buying VHO to retro fit into the canopy, would that work with yours?
You could get a compact fluorescent retrofit-that is what I have-and just screw it into the top of the canopy. You just need sunglasses when you open it.