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  1. C

    pool store says ch needed to prevent metal corroding?

    water levels fc-3 cc-0 tc-3 ph-7.7 ch-140 ta-118 cya-40 copper-0.25 temp 76 24300 gallon inground vinyl pool store says need to raise ch to 200 inorder to prevent corrortion from ruining my ladder and heater- copper levels keep rising (slowly) previous owner used frog- but why are they...