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Thread: Iron stain

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    Teald024's Avatar
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    Iron stain

    So my opening didn't go perfect, or should I say my closing. When I pulled the cover off I found a lonely screwdriver sitting on the bottom of the pool, right under my skimmer. By the looks of the tool and vinyl liner, it was there for more than a couple of hours. So now I have this "nice" brown stain on the liner.

    I guess the easy part is that I know that it is an iron stain. Now to get it off of there.

    I found the article on metal stains and the Vitamin C / Ascorbic Acid Treatment for staining but those seem to be written to help if I have general staining, not one particular spot to treat. I get that Vitamin C / Ascorbic Acid will remove the stain, but I'm uncertain what to do next.

    The stain is about 3" long and 1/2" wide. I've vacuumed up the loose bits.

    How much Vit C / AA is needed?
    Tablets or crushed in a sock?
    Since this is only a spot treatment, I assume the FC drop isn't necessary?
    Is the sequesterant needed with this (minimal?) stain?
    Once the stain is gone off the liner do I need to do anything else?
    Is this amount of staining significant enough in 12k gallons to cause me any future problems?

    I'll try to grab a pic tonight.

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    Mod Squad pooldv's Avatar
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    Re: Iron stain

    I would crush up tablets in a sock and use it scrub the stain away. No need for a sequestrant. It should be fine.
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    Re: Iron stain

    Welcome to the forum

    How much Vit C / AA is needed? Maybe 1/4 cup. enough to cover the stain

    Tablets or crushed in a sock? crush the vitamions and put them in a sock
    Since this is only a spot treatment, I assume the FC drop isn't necessary? correct
    Is the sequesterant needed with this (minimal?) stain? No
    Once the stain is gone off the liner do I need to do anything else? No
    Is this amount of staining significant enough in 12k gallons to cause me any future problems?No

    I'll try to grab a pic tonight.


    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Iron stain

    I haven't tried any removal yet, but here is a shot of the stain. Looking at it again it is about 3" long and 1" wide.

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    Re: Iron stain

    Well, that doesn't look like an iron stain to me but I think trying the vitamin C is still your first step.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad pooldv's Avatar
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    Re: Iron stain

    I agree it looks organic. Either Vit C or chlorine will get it. More here, Pool School - Pool Stains
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    Re: Iron stain

    I'd say organic and with proper chemistry it will disappear over time.

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    Re: Iron stain

    Quote Originally Posted by Teald024 View Post
    When I pulled the cover off I found a lonely screwdriver sitting on the bottom of the pool, right under my skimmer..... I guess the easy part is that I know that it is an iron stain. Now to get it off of there.
    Please reread my original post.

    I fished this hunk of plastic & iron out myself with disappoint on my face . I wiped the rusty sludge off the screwdriver and there was a brown stain on the liner under it. It's definitely an iron stain. I think I'm going to wait til the water warms up a bit, it was a balmy 64F this morning. Thanks for the info about the Vit C.


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