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Thread: Rocks and metals

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    Rocks and metals

    Just wondering.... our pool has a waterfall built of Moss Rock (sandstone impregnated with moss/algae) and most of the pool coping is also moss rock.

    This rock can be soft and some are decaying a bit. We intend to have the surfaces pressure washed and sealed as part of the renovation.

    My question.... might these orange toned rocks contain iron that has been leaching into the pool?
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Rocks and metals

    It is certainly possible. Some kinds of rock do contain a lot of iron and iron does tend to look orange when weathered. On the other hand the orange color could come from the moss.
    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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    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Mint Hill, NC

    Re: Rocks and metals

    This may not be relevant but it was interesting and pertains to how sandstone is colored in nature and what happens to change it.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

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