K and H Thermo-Pond Deluxe Perfect Climate Pond De-Icers have "reinvented the wheel" when it comes to keeping ice out of your pond. The Perfect Climate De-Icer can be used as a floating de-icer or can be converted into a submersible de-icer with the push of a button!
Helps create perfect winter climate for your fish
All-in-one design transforms from submersible to floating version in seconds
Safe for all ponds; will not burn pond liners
This safe, energy-efficient pond de-icer switches from floating to submersible at the touch of a button. Its 12-foot long power cord allows you to reach any part of your pond. Refer to the manufacturers region chart to find the de-icer that will work best for you based on where you live.

2-year manufacturer warranty. MET-listed.
Specifications:
250 Watt: Ponds up to 1000 Gallons - (6" Diameter x 5" High)
750 Watt: Ponds 100-1,200 Gallons - (6" Diameter x 5" High)
1500 Watt: Ponds 400-1,200 Gallons - (9" Diameter x 5" High)
Important: Be sure to reference the zone chart (above) to choose the proper De-Icer model for your region and pond size.
FAQ:
Q: What happens if I use a higher wattage deicer than needed in my pond
A: The De-Icers are thermostatically controlled. This means, as long as you purchased the minimum wattage required for your zone and pond size, they will work fine. Keep in mind that higher wattage models will use more electricity than the lower wattage models. For example, the 750 watt De-Icer will use three times the amount of electricity when running versus the 250 watt De-Icer.
Q: There is a piece of Styrofoam in the ring. Do I leave it in
A: To use this product as a floating De-Icer, leave it as is. To use it as a submersed De-Icer, simply unscrew and remove the float ring.
Q: At what temperature should the De-Icer turn on
A: Our Thermo-Pond units are thermostatically controlled to keep the average water temperature just above freezing. They feature internal thermostats and will turn on and off as necessary to keep the pond from freezing over.