Anti-Ice pond heater

The Cobalt Anti-Ice Pond Heater combines reliable thermoplastic
heating with convection technology to make the most energy efficient
and effect pond de-icer. As the water heats around the core of the
Cobalt Anti-Ice Pond Heater, an upward current of warm water is created
and is directed outward ensuring an ice free area of the pond surface
around the heater. This ice free zone allows potentially lethal toxic gases
to escape the pond into the air, and the exchange of oxygen into back into
the pond water. Convection effect can be enhanced
with the use of an airstone.