Many pond owners wish to keep fish in their ponds all year round, this is easy to do with a pond heater or deicer. The two types of pond heaters are submerged and floating. Floating pond heaters rest on the surface of the pond and keep a small area from freezing over, making it the more efficient of the two options. Submerged heaters are capable of keeping a smaller amount of water, usually less than 300 gallons and no more than 18 inches deep from being covered by ice. At Aquatic Pond, shop all the tools and accessories you need.