Replacement Impellers for Complete Aquatics ProficientFlow™ Asynchronous Pumps Size:Fits 2000 Pump yet efficient 1 Watt LEDs ValuFlo yet efficient 1 Watt LEDs have light output equivalent to 10 Watt halogen light and boast a 40 The Aquascape® Spillway Bowl creates a beautiful spilling water feature that can be added to any pond or pool creating an instant waterfall a frequent reason for problems is mineral build up way down inside the impeller housing which causes wear and tear on the impeller and friction against the impeller which can cause overheating and intermittent operation We strongly recommend cleaning out the well which houses the impeller with vinegar and an old toothbrush to eliminate mineral build up before installing the new impeller