M.L.
Cover it with a lid that matches the stand. The cover helps keep the heat in, too, so the heater runs less in the winter. This will lower your electric bills, keep the fish healthier, and reduce the salt dust. I imagine a cover would reduce the water evaporation rate, too, which will also save you money on saltwater. Is there a reason there is no cover? I would be afraid of things falling into the tank!