It is generally recommended to backwash a pool when the pressure gauge on the filter reaches 8 to 10 pounds per square inch (psi) above the normal operating pressure. However, the frequency of backwashing can vary depending on factors such as pool size, usage, and the specific type of filter you have. It’s a good idea to consult your pool’s manufacturer guide or a pool professional for specific guidance on how often to backwash your pool.

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