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Thread: Pool Stain Treat from United Chemical

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    Pool Stain Treat from United Chemical

    Has anyone ever used the product "Pool Stain Treat" from United Chemical? I've heard good things about it and it has the advantage of not having to lower your chlorine below 1ppm to treat metal stains. Just wondering if anyone had good/bad things to say about it before I tried it.

    If successful was there any trick to make it work right?
    22000 gallon, vinyl, 1.5HP Century Centurion Pump
    Hayward Sand Filter (no.20 silica sand)
    PoolVac Plus Automatic Cleaner

  2. Back To Top    #2
    IT is basically oxaxlic acid. It will remove stains but you run into the danger of precipitating out calcium oxalate which can cloud the pool. I preper ascorbic acid for stain removal even though you need to drop the FC for this reason and the fact that it is much less toxic than oxalic acid.

  3. Back To Top    #3

    Join Date
    May 2007
    Central NJ

    Re: Pool Stain Treat from United Chemical

    If I don't have CA in the pool, can the Oxalic Acid still precipitate out Calcium to cloud the pool?
    10K IG fiberglass pool, Hayward 24" Sand Filter, 1.5HP Hayward superpump, Heat Pump Heater

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