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How often is it necessary to backwash my pool filter?
The frequency of backwashing will depend on many factors including the size of your filter, flow rate of your plumbing, and bather load in your pool. You will know your filter needs to be backwashed when the pressure reading on your filter reaches the specified level (as set out in the filters manuals guidelines). Whenever the pressure reaches this level the filter should be backwashed. It is ususally 10-15 psi higher than the psi when the filter was new of just thoroughly cleaned.
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