Coralife makes mounting legs for their aqualights. These elevate the fixture above the water. I run my 72gal as a "topless" tank, no glass movers or canopy. This allows for better gas exchange (i.e. evaporation), better light pentration for my corals and helps keep my tank temp cooler. Here are some pics of the mounting legs...
Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
Have a great day! Brian