Pinkish hue is developing outside of pond

Discussion in 'Water Chemistry' started by rb needs help, Mar 5, 2018.

  1. rb needs help

    rb needs help

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    Pinkish color is not slimy. I add sodium hypochlorite 12% each week for the past 2 years and no problems. the demand is high due to the fact of no filtration. When I add sodium hypochlorite directly onto the pinkish hue, it turns black. but doesn't kill it. Pond is made of title on the walls and bottom. any idea's? 0302180857.jpg 0302180857.jpg
     
    rb needs help, Mar 5, 2018
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  2. rb needs help

    MitchM

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    Looks like a permanganate stain on marble?
    You could try different oxidizers in an inconspicuous area.
    Maybe hydrogen peroxide.
    If this is municipal water, there should be a test available from your municipality to tell you what's in the water.
    If you never do water changes, perhaps you've had a mineral (manganese) buildup over time.
     
    MitchM, Mar 5, 2018
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  3. rb needs help

    Jhn

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    There is also a bacteria that can turn areas a pink color that are constantly wet. Just another thought in case it is not as Mitch suggested.
     
    Jhn, Mar 5, 2018
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  4. rb needs help

    Lisak1

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    I was going to add that - airborne bacteria, common around damp areas. But if it's not slimy and doesn't wipe off then maybe it's staining from your water. I agree with @MitchM - try H2O2.
     
    Lisak1, Mar 5, 2018
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