Every swimming pool pump has a capacity that lets you know how much water it can circulate. When buying a pool pump it is important to look at their circulation ability by the minute or by the hour. A good basic rule of thumb is to ensure that the swimming pool pump can circulate your pool’s entire water volume in around 6 hours.
The size of your swimming pool filter is another factor to consider when sizing the swimming pool pump. If the swimming pool pump is too large for the swimming pool filter, it can make the pool filter work poorly or even worse and it can damage the swimming pool filter internals. Generally speaking, the slower the water moves through the swimming pool filter the better the quality of filtration, particularly with sand or DE filters.