Does not freeze up due to air vents on the sides, the foul gasses can escape. Chamber to lower the unit can be filled protecting the unit from rising when ice forms
Oase Icefree 20
Keeps a portion of the garden pond free of ice down to -20 degrees. The winter design float is connected to a pump via an 80cm silicon hose that is suspended in the pond. It moves minimum quantities of warmer water from the deeper zones under the ...