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    CYA ridiculously high, throw it all away?

    Folks, 18x36 inground pool, roughly 20k-26k gallons, sand filter (Hayward S200), 2 skimmers, 2 return jets, no main drain. I had organic staining on my liner and recently learned that Ascorbic Acid would remove it. I applied two containers of Ascorbic Acid and my pool was gorgeous on July...