We have a few different Pond Heater’s or Fountain De Icer’s they work great to keep water circulating.
Ideal when placed in front of the skimmer or near the pump to keep the water going…
Always keep an eye on the water in the winter time… Since Auto fills are off… They can run low on water…
This will not keep the entire surface area from freezing only an area around the device…
They heat up similiarly to an iron and float on the surface… keeping the water around it from freezing…
A must with fish… It is important to keep air and water moving to provide oxygen in the water.