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  1. G

    There is white cement plaster in my cartridge filter

    My in-ground 24,000 gallon pool is 51 years old and it has never never been re-plastered and leaks only about 15 gallons per day. Over the years the cement had dissolved exposing sharp sand grains that hurt the grand kids feet. Sp 3 years ago I "polished" the white plaster with #50 grit...