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Thread: Please help ID Pool stain

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    Luder917's Avatar
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    Please help ID Pool stain

    Hi. New pool owner since October. I been been trying to keep the pool balance using the BBB method since I got the pool drained back in November. The pool guy power washer it and he said he used acid with no luck. There are some dark stains all over the pool. It is worst around the deep end. I put a chlorine tab on a couple spots around the pool for about 5 minutes and it did not change. What should I try next?

    Results from poollogger.com

    FC: 2.5 (I added chlorine after this to bring it up to 5)
    CC: 0
    PH: 7.8
    TA: 125
    CH: 275
    CYA: 40
    Temp: 66
    Attached Images Attached Images
    21000 gal IG plaster, hayward 2 speed pump, hayward cartridge filter, taylor k-2006

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    Mod Squad kimkats's Avatar
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    Re: Please help ID Pool stain

    Next if vitamin C! yep just some cheap vit. c crushed up in a sock and let it sit on one of the places or you can also rub the vit. c tablet on it.

    Can you feel the stain if you rub your hand or fingernail over it?

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Re: Please help ID Pool stain

    In these pics, is there water in the pool? Looks to me like typical wear on the finish probably from not being take care of. How old is it?
    Paul
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    Luder917's Avatar
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    Re: Please help ID Pool stain

    I will go get come vitamin c today thanks.
    The pool is filled. House was built in 1996. The neighbor told me the pool was built later. I'm sure the pool was neglected for a while. When I google map my house, I can see the pool is filled up about 2' from the bottom and that's where most of the darker stains are.
    21000 gal IG plaster, hayward 2 speed pump, hayward cartridge filter, taylor k-2006

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    Mod Squad pooldv's Avatar
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    Re: Please help ID Pool stain

    I agree that looks like worn out plaster. If it is smooth enough and doesn't leak then you can just live with it for a while until you are ready to replaster. But, it doesn't hurt to work on the stains, more here, Pool School - Pool Stains
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    Luder917's Avatar
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    Re: Please help ID Pool stain

    I got some vitamin c today. Crushed it up and put it in a sock. I put it where it's the darkest near the drain about 8' deep and couldn't really tell any difference. But I also put some on a spot on the stairs and noticed a huge difference. So does that mean I can use absorbing acid to get rid of some of the stains? Where's the best place to get some?
    21000 gal IG plaster, hayward 2 speed pump, hayward cartridge filter, taylor k-2006

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    Mod Squad kimkats's Avatar
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    Re: Please help ID Pool stain

    I have no idea where to buy it but it sure does sound like it will help on some of the stains! SWEET! Here is a link about it though!

    Ascorbic Treatment to rid Pool of metal stains

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Mod Squad pooldv's Avatar
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    Re: Please help ID Pool stain

    Im pretty sure that link has some places to buy.
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    Re: Please help ID Pool stain

    I think that the turquoise and black stains are likely to be copper. I suspect that there are also iron stains.
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    Luder917's Avatar
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    Re: Please help ID Pool stain

    Quote Originally Posted by JamesW View Post
    I think that the turquoise and black stains are likely to be copper. I suspect that there are also iron stains.
    Will ascorbic acid get rid of all those stains?
    21000 gal IG plaster, hayward 2 speed pump, hayward cartridge filter, taylor k-2006

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    Re: Please help ID Pool stain

    I don't think that it's going to work on the Copper stains.
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