Try crushing a couple of vitamin C tablets and put them in a sock, or some ph down, and rub it on the stain. If the stain doesn't come off then it is organic and will come off over time with chlorine.
Re: Stains from neighbor's fireworks
Try crushing a couple of vitamin C tablets and put them in a sock, or some ph down, and rub it on the stain. If the stain doesn't come off then it is organic and will come off over time with chlorine.
Northeast PA
16'x32' kidney 16K gal IG fiberglass pool; Bleach; Hayward 200lb sand filter; Hayward pump; 24hrs; Pf200; well; summer: none; winter: mesh; ; PF:7.5
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