This pond deicer is energy efficient and best for ponds up to 1000 gallons.  Uses 120 watts and has an 18 foot cord.  Thermostatically controlled.

This pond deicer by Pondmaster has a doughnut design which maintains an ice-free center while only using 120 watts. Best to place this de-icer in the water before ice forms but if ice has already formed this pond heater will melt through a thin layer of ice. 
We recommend using this deicer in ponds up to about 1,000 gallons in size.
Has an 18 foot power cord.
Thermostatically controlled (which means just plug unit in and it will turn on and off as needed).
Will not harm rubber liners or preformed ponds.
Note: If you have numerous large koi (12+ inches), then 2 deicers would be preferable.
Deicers such as this unit have a built in thermostat & will melt ice to vent a pond but will not heat water over 40 degrees!

Manufacturer: Danner Mfg.
SKU:	Pondmaster
MPN:	3499