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  1. M

    Water Chemistry Question

    Here's my problem… I have tried to maintain a balanced pool with target values of FCL 3 ppm, pH 7.5, TA 90-100 ppm, Ca Hardness 200 ppm, and CYA under 50 ppm. Been failing to meet the CYA target and am running more like 90 ppm. Prior to around August 2019 my pool's pH would routinely creep...
  2. M

    Just Joined

    And am looking forward to becoming better educated about the care of my backyard pool. Am a retired medical physicist who is comfortable with making measurements, doing calculations, and hopefully reaching correct conclusions. I found this forum because I've been chasing a problem. I'll post...