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Thread: High Copper Levels and Stains

  1. Back To Top    #1

    Join Date
    Apr 2015
    League City, TX

    High Copper Levels and Stains

    I am new here. I took care of my pool myself for 5 years. 6 months ago I turned it over to a pool company for chemicals only. I don't know if it is related, but I just noticed an overall brownish stain on my plaster. I took my water to have it tested. Results are:
    FC: 4.5
    CC: -
    pH: 7.8
    Alk: 71
    CYA: 60
    Copper: 1.5
    Iron: .1
    Phos: -

    I have not had algae problems. I use city water. Pool is starting its 6th season this summer. Filter and Pump are 2 years old. Polaris and polaris pump are original. No heater.

    What should my course of action be?
    40K, IG Plaster, Pentair Quad DE 60,
    WhisperFlo 2HP Pump, Polaris PB4-60 Booster pump

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Houston, Texas

    Re: High Copper Levels and Stains

    Hi, welcome to TFP! You will need to drain the water and refill the pool to get rid of the copper. If you don't want to drain the pool you can manage with the copper in the water but you will need to use a sequestrant on a regular basis and carefully monitor your FC and ph levels. In either case to get rid of the stains you will probably need to do an acid wash.

    Find out what the pool company has done to your pool. Do they use copper based algaecide? Did they add a mineral pack? If it was a mineral pack, remove it.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: High Copper Levels and Stains

    Welcome to TFP!

    Keep in mind that pool store testing is not especially reliable. A copper level of 1.5 is fairly bad, copper needs to be below 0.3 to be safe. Hopefully the test result is wrong and it is actually lower than that.
    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

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