Springtime means opening up items that have been closed all winter, such as ponds and gardens. The ideal time to start a pond pump after winter is when frost is no longer forecast. If this schedule is followed, then no problems should arise with pump operation.
Preparation for spring starts before winter is over, but a pond pump is not necessarily started before that time. The largest determining factor of when your pump should be started again is weather. If you live in a cold region where the pond water freezes during winter, then you will not be able to get the pump working until the frozen water melts. If you live in a warmer area, though, you can start the pump much sooner. Check the weather forecast and planting guide for your area to see when the last frost of the season is supposed to occur. Do not start the pump until the ground will no longer freeze.
Before the pump can be started, the pond must be prepared for spring in other ways. Many people place netting or cover over their pond for winter. This netting prevents debris from falling into the pond while it is not filtered. The covering should be removed before starting the pump. The pond also should be raked to clear out weeds and leaves. Stabilising formulas and chemicals should be added to the pond water before the pump is turned on as well. Starting with a clean pond allows the pump to begin filtering easily.
Before starting the pump, examine its filters. They should be clean and free of large chunks of mud, leaves, weeds and other debris. If the filters look dirty, then rinse them off with a hose. Also ensure that the pump's intake and outtake valves work. The connections to the intake and outtake valves should be secure, and no kinks or holes should be in the filter lines. Never start the pump until it is fully submerged in water. Running a pump dry can cause damage. The electrical connection needs to be secure and the motor in good condition. Run the pump for several days in the early spring to condition the water for fish and plants that you want to add during the year.