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Thread: Stain from toy battery

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    Stain from toy battery


    My DGS was playing with one of those infernal "swim" toys that require a battery. He opened it up and his younger brother took the battery and threw it in to the pool. By the time I discovered what had happened and found the battery (at the bottom of the deep end) the battery had created a stain on the bottom of the pool, similar in appearance to a rust stain. The pool is some sort of concrete pool (fairly new here, we are in SWFl - old pool was vinyl - I am not sure of the differences in types of concrete if any).

    Any suggestions as to what if anything I can do to remove or lessen this stain?

    Pool is ~25,100 gal, and I use BBB method to balance the water. I have also added salt (~2,100) and borates (43). I'm not sure if you would need my other readings, but currently FC/TC is 4, pH is 7.6, CYA 45, TA 130 (looking to lower that number some & up borates to 50 - need to pick up more MA first).

    Thanks for any help!


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

    Re: Stain from toy battery

    Put a couple of Vitamin C tablets in a sock and rest that on the stain for 30 seconds. If the stain is only partially gone after 5 minutes, repeat the procedure.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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