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Thread: Just got some new test strips for AGP/confused

  1. Back To Top    #1

    Join Date
    Jul 2007
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    Just got some new test strips for AGP/confused

    every thing fine apart from "Total Hardness" not sure what this means its coming in at about 1000, according to the instructions this is very high.

    What does this mean? last test strips didnt have this on it. What do I need todo? Something to worry about?

    I do live near a chalk pit in England, so used to hard water, is this what it is?

    Water is clear and looks healthy.

  2. Back To Top    #2
    JasonLion's Avatar
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    Total hardness (TH) is the sum of calcium hardness and magnesium hardness. Mostly around here we talk about calcium hardness (CH), which is typically about two thirds of TH, though that varies.

    Very high TH levels can result in calcium/magnesium scaling. This rarely troubles vinyl pools be it can cause problems for heaters, SWGs, and occasionally pumps. You can avoid problems by keeping your PH under control at all times and keeping TA on the low side of normal.
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  3. Back To Top    #3

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    PH 7.2
    ta between 80 & 120
    fc 3
    tc 3
    th i would say about 1000

    I have a vinal Intex pool?

    The water is fine and clear?

    just worry a bit(kids)

  4. Back To Top    #4
    JasonLion's Avatar
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    If you can keep the PH at 7.6 or lower at all times you will be fine.

    High TH won't harm people in any way. It is fine to swim in.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  5. Back To Top    #5

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    Thanks, Feel better now!!

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