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Thread: Borates - do they lessen over time or just by dilution?

  1. Back To Top    #1

    Join Date
    Apr 2007

    Borates - do they lessen over time or just by dilution?

    Do borates eventually decrease because of air, light, etc., or just by dilution?
    Or is it once you add them, you always have them?

    Also, what if you go over 50ppm? What effect does it have on your pool?

    14,000 gallon, in ground, plaster, free form, play pool.
    Sta-Rite Max-E-Glass with a 1.5 hp Emerson motor
    WaterCo Micron High Rate sand filter S750 490 lb, 4883 sq ft - using ZeoBest
    In floor Polaris cleaning system
    Blue Diamond robot for those after storm days when I can't wait overnight for the in floor to clean it.

  2. Back To Top    #2

    In the Industry

    Join Date
    Mar 2007
    Knippa, Texas
    I believe borates stay where they are, much like CYA. I have more than 50 ppm, prolly around 60-65 (I had overestimated my pool volume). My water looks and feels great.

    I don't think it's harmful to have borates over 50, just doesn't offer any add'l benefits. Other folks here may have different info. [edit: the pH does tend to go high and I have to add acid a couple of times a week. Possibly I wouldn't have to deal with that if my borates were a bit lower.]


    My pool: INDOOR 13x27 rectangular fiberglass, built ~2001, BBB, TA-60 sand filter, Hayward two speed pump (1 hp/0.33 hp), 3/4 hp booster pump for solar heater
    Taylor K-2006 test

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