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  1. M

    Blue cloudy water after opening and 3 consecutive days of <1.0 FC overnight loss

    25K gallon, in-ground, vinyl pool Opened last Saturday 6/10 Shallow side I can see the bottom, but it is very obscured Deep side I can't even begin to make out the drain Water is otherwise clear/blue Tests: Taylor K-2006 (T) at 7:30am today Pool store test (PS) at 10:30am today FC: T: 12.5...
  2. M

    Chelated Copper vs PolyQuat for cold Wisconsin Winter Closing

    Hello all, FC - 3.4 CC - 0.0 pH - 7.5 TA - 90 CH - 260 CYA - 35 Inground, vinyl pool, 24,500 gallons, sand filter. This is my first year with a pool, and our pool store is trying to sell me a BioGuard winterizing kit (amazon listing). It has dichlor shock (with clarifiers, buffers...