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  1. M

    Help diagnosing low suction at skimmer

    20k gallon in-ground 1-1/2" piping 1 skimmer 2 ports below skimmer basket. 1 to the pump and 1 to the main drain. No valve to distribute suction between skimmer and main drain 1 valve to distribute return between 1 return port and all the other ports (not sure of the reason for this or the...