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Thread: stains

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    stains

    hello everyone im newbie, my problem isi have what looks like black sand on the bottom of pool( marsite)that wont brush away . finish is 11 years old.starting to go up the sides .this all started about 4 months ago thanks

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    Mod Squad Bama Rambler's Avatar
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    Re: stains

    Welcome to TFP.

    Can you scrape it off? If so what does it look like?

    Try holding a trichlor tablet on it a little while. If it lightens, it's organic.
    If it doesn't lighten with a trichlor puck then try crushing some vitamin C tablets and putting them in an old sock and holding them on it for a little while. If that lightens it then it's metals.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: stains

    Will try your methods and get back thank you

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    Re: stains

    I believe its black olive stains a lot of small seeds in my filteranyo.e know how I can get rid of them stains

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    Mod Squad Bama Rambler's Avatar
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    Re: stains

    Did the trichlor tablet lighten them any?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: stains

    Yes

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    Mod Squad Bama Rambler's Avatar
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    Re: stains

    Then raising and keeping the FC above normal level for a while will probably lighten them. It may take a while for it to make a big difference but it should.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: stains

    can I swim in the pool with the F C higher

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    Mod Squad Bama Rambler's Avatar
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    Re: stains

    You can swim up to shock level for your CYA.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: stainsthank you very much I'll try it

    thank you very much I'll try it

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