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Thread: Metals in my fill Water

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    Metals in my fill Water

    I am having a tough season with evaporation and/or pool water loss so I need to keep filling pool. There a lot metals in long island water so my water is not as crystal as I like (and a few minor stains). Does anyone recommend Jacks Purple or something cheaper???
    ...I have a SWG.
    24,500 gallon plaster i/g
    sand filter (Hayward S-200)

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    Melt In The Sun's Avatar
    Join Date
    Oct 2009
    Tucson, AZ

    Re: Metals in my fill Water

    The ascorbic acid treatment is typically used to remove stains:

    After they're gone, a sequesterant like Jack's will keep them from depositing again. Phosphonic acid derivatives (like HEDP) are the best sequesterants, but I don't know what the cheapest one is. Metal Free is not the same kind.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    Join Date
    Oct 2010

    Re: Metals in my fill Water

    Our fill water from a well has trace amounts of Iron and over time it causes stains.
    I used Jack's Magic Purple Stuff for 2 seasons in our saline pool and it worked well.

    I am currently testing the Blue Wave brand of Super Rust & Scale Remover.
    It is an HEDP based sequestering agent at 1/3 the cost of Jack's purple stuff.
    The MSDS lists only a proprietary blend; however, the shipping classification UN 3265 and (1-Hydroxyethylidene diphosphonic Acid)
    Start-up dosage: 15 oz. per 15,000 gallons. Maintenance dosage: 5 oz. per 15,000 gallons.

    For pools with only minor issues with Iron, carefully monitoring PH and regularly adding a sequestering agent seems to be a cost effective solution.

    I have also been watching the threads on the new product to the market CULator. While the convenience of this product would be a plus, the annual cost would be much higher than the regular use of a sequestering agent.


    20x40 free-form IG vinyl, 1hp Hayward superpump, Hayward pro grid DE filter, Raypak heatpump, Goldline Aquarite SWCG, Polaris 280 with booster, and tested using a Taylor K2006.

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