This is what they said when I asked about mounting this upside down:
"There are several factors that you must consider when choosing a light for your aquarium. Ultimately, my advice is to find a light fixture designed specifically for this application. I worked for a couple years in a public aquarium, so I have a little more insight on this question. Here are some of the reasons for my advice: * Corrosion & electrical shock - Aquariums have evaporation and splashing water will speed the corrosion of the fixture. The light fixture needs to be designed to withstand these conditions. In a salt water aquarium application the salt accelerates the corrosion even more. Standard lights like this one Along with corrosion, electrical shock is a risk you will have to consider. This fixture has a standard rating. Some fixtures, like bathroom and outdoor fixtures are UL rated for wet locations. And I believe an aquarium application will require a design that will provide more advanced precautions for the application. This light will likely not afford you those safety precautions and deteriorate very rapidly. * Required wattage "“ The specialty bulb you are looking to use may have excessive Amp, wattage, or voltage requirements beyond the intended design of the fixture. For example, some fixtures have a max rating of 15 watts for fluorescent and 60 watt for incandescent. This is because the start up power for a fluorescent are equivalent to the incandescent operating wattage. You would have to do quite a bit of research before verifying the compatibility of the bulb and fixture. *This application will likely void the warranty. The safety concern alone is enough not to use this fixture. But, there are many other reasons not to use this fixture. Check out some of the online aquarium stores. It will cost more, but in the long run, it will be worth it."
