Although its generally recommended that all the pool water undergo filtration every 24 hours, the pump does not need to run all the time. If your pool is in constant use, you may need to run the pump for up to eight hours per day, frequently checking the water clarity and chemical balance.
Do you have to leave your pool pump running all the time?
There is no need to run a pool pump continuously for 24 hours a day, with a few exceptions. It is normally recommended that your pool pump should run long enough to pump the entire volume of water in a pool each day. In practice, this generally means around 8 hour each day.
What happens if my pool pump runs dry?
If it keeps running dry, the pump heats up and so does the water inside. Commence melting plastic. The motor might survive due to the high temp sensor kicking in but the wet end of the pump will be a casualty. If your pump has run dry and appears to have survived, replace the shaft seal!