The PondXpert Variflow pond pump threatens a revolution in the pond pump market. Variflow 20000 Specifications. PondXpert Pond Pump Variable Flow 20000. Pond hose size 25-50mm (1-2"). The panel can be used to stop / start the pump as well as increasing or decreasing the power by 23 levels as required and also includes a lock function so no accidental change to the settings can be made.
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