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Thread: Help!! High levels of CH and CYA, Iron and Copper

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    Join Date
    Jul 2012
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    Perris, Ca.
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    Help!! High levels of CH and CYA, Iron and Copper

    Hi all, I'm still relatively new to pool care. I have a purple sediment (sand like in texture) on the steps and bottom of my pool, I took a water sample to my local pool store for testing (yesterday. 7-8-12) they said I have iron (.15) and copper (1) in the water and recommended Metal free. I added it just as they told me and took another water sample back today (7-9-12) with the results being even higher than yesterday, Iron .2 and Copper 2. And then they told me today that my CH level is 940 and my CYA is 200. Yesterday my CH tested at 260 and the CYA was 120. They recommended that I drain my pool and refill it and to start all over again because my water is old. My pool is 6 years old and I've never drained it. Am I getting correct information from the pool store? How do the levels jump that dramatically? And finally, should I drain my pool and start over?

    Other test results

    FC 0 (I have not added chlorine because I heard that it can cause staining if there is metals in your pool)
    TC 0
    TA 70
    pH 7.0

    Thank you for any and all help!
    Mary
    12,200 Gallons
    Hayward cartridge filter
    IG-Fiberglass
    Installed July 2006

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    Re: Help!! High levels of CH and CYA, Iron and Copper

    should I drain my pool and start over?
    Almost surely. Your problems are just too complex to solve easily any other way. Do you know how the iron and copper got in there? Do you fill from a well?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Jul 2012
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    Perris, Ca.
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    Re: Help!! High levels of CH and CYA, Iron and Copper

    I really don't know how the copper or iron got in the pool, but i'm thinking its because we run the pool heater every day or from my dogs going in and out of it all day and bringing a never ending supply of dirt with them. And no, we are on Municipal water.
    12,200 Gallons
    Hayward cartridge filter
    IG-Fiberglass
    Installed July 2006

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    Administrator Leebo's Avatar
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    Re: Help!! High levels of CH and CYA, Iron and Copper

    Do you use an algicide?

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    Perris, Ca.
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    Re: Help!! High levels of CH and CYA, Iron and Copper

    No, I haven't had to use any this season. The water in my pool has remained clear and blue.
    12,200 Gallons
    Hayward cartridge filter
    IG-Fiberglass
    Installed July 2006

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    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
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    Re: Help!! High levels of CH and CYA, Iron and Copper

    Copper cyanurate is purple. So that can happen from high copper and CYA levels, which you apparently have. Maybe the Trichlor pucks/tabs you've been using have copper in them (some do).
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Perris, Ca.
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    Re: Help!! High levels of CH and CYA, Iron and Copper

    Thank you all so much for your help, I will make sure to check my chemicals for copper additives. Any suggestions on how I should drain my pool? Its fiberglass so I know I shouldn't completely drain it.
    12,200 Gallons
    Hayward cartridge filter
    IG-Fiberglass
    Installed July 2006

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    Re: Help!! High levels of CH and CYA, Iron and Copper

    All in all, you have too many issues not to drain your pool. Municipal water should contain none of the iron or copper you currently have so get yourself off to a fresh start.

    Do several drain/refills so you don't completely empty the pool. Ask back if you don't understand how.

    read "The ABC's of Pool Water Chemistry" up in Pool School.....that'll get you off to a good start.

    Get your self a test kit (Taylor K-2006 or TFTestkits TF-100) that will test all the parameters you need and will allow you to manage your own pool water.

    How all that stuff got in your pool is not as important as getting it all out and managing your water so it doesn't get back in.

    EDIT: Just saw your post.

    1. Drain about 1 foot of your water, stop and refill. Once refilled, repeat this process. It'll take about 5 or so cycles to get almost all new fresh water

    2. Stick a siphon hose or submersible pump down at the deep end of the pool and start withdrawing water. Simultaneously, add fill water from the shallow opposite end of the pool.....balancing both flows so the water level never changes.

    You will have good pool water when your iron content is .2ppm or less and your CYA is 50ppm or less.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    Jul 2012
    Location
    Perris, Ca.
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    Re: Help!! High levels of CH and CYA, Iron and Copper

    Thank you, you have all been wonderful and I'm so happy I found this site! There is so much useful information here
    12,200 Gallons
    Hayward cartridge filter
    IG-Fiberglass
    Installed July 2006

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