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Thread: High Calcium Hardness - Stains - Well Water

  1. Back To Top    #1

    Join Date
    Mar 2015
    Location
    Windermere/FL
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    3

    High Calcium Hardness - Stains - Well Water

    Looking for a second opinion.

    In ground pool - diamond bright finish is 7 years old.

    Home water is well - calcium harness is at 200+

    total Chlorine 6 (just shocked - was at normal levels last week)
    free chlorine 6 (just shocked - was at normal levels last week)
    pH 7.6
    Total Alk 100
    Calcium Hardness 725
    Stab 90
    TDS 3000

    Jack's magic stain test shows copper stains. Currently throughout pool. Well water leaves similar rust color stains from sprinklers.

    Pool store (been seeing for a while) recommends:

    -Drain
    -Acid Wash
    - Refill
    - Stain treatment

    First 3 steps required because stain treatment will not be effective at current calcium hardness levels.

    Thoughts?

    Thanks!

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    TFP Guide
    mrcarcrazy's Avatar
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    Jan 2014
    Location
    Odessa, TX
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    973

    Re: High Calcium Hardness - Stains - Well Water

    My first suggestion is to get a test kit and test your own water. Often times the pool stores water testing is less than accurate. Not to mention being able to test your own water is seriously helpful.

    What do you Chlorinate with?


    check out these:
    http://www.troublefreepool.com/conte...ater-chemistry
    http://www.troublefreepool.com/conte...d-metal-stains

    What's the Calcium Hardness of your well water compared to the current hardness of your pool? (hoping you are using one of the recommended test kits).
    IG gunite/plaster pool/spa Started 1/17/14, Plastered 5/16/14
    Size: 12'-21'x39' free form, depth ranging from 4' to 7, attached 6 person spa with spillover.
    Equipment: Whisperflo 2hp pump, Pentair 30" sand filter, Pentair Mastertemp 400k BTU heater, 1hp Whisperflo for waterfalls, and a blower for spa floor

  3. Back To Top    #3

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    Mar 2015
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    Windermere/FL
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    Re: High Calcium Hardness - Stains - Well Water

    Did not test with my own kit - did so in the past, and this store's results were spot on to my own testing.

    That said - liquid chlorine, + tabs.

    Home water is well - calcium harness is at 200

  4. Back To Top    #4
    Mod Squad JohnT's Avatar
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    Apr 2007
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    SW Indiana
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    Re: High Calcium Hardness - Stains - Well Water

    Rust colored stains sounds like iron. Copper is generally black or green. Pretty obvious you have iron in your well water.

    Do you have any option for another water source? Even if you clean it up, you will have to routinely add sequestrant to the pool to keep it from staining again, and the metal concentration will keep climbing as water evaporates and is replaced, just as your calcium did.

    Do you have pictures of the staining?
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  5. Back To Top    #5

    Join Date
    Mar 2015
    Location
    Windermere/FL
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    3

    Re: High Calcium Hardness - Stains - Well Water

    Sorry - copper was my conclusion, not the pool stores. The Jack's Magic kit resulted in the O2 Shock leaving a yellow/ornage stain on pool, which was identified in the instructions as copper.

    No other source for water besides the afternoon rains we get every summer.

    Picture attached, I think.


    20150331_183039_resized.jpg

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