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Same quality as BioGuard®, Guardex® and Sun®
This high quality, fast-dissolving granular chlorine is pH-neutral and leaves no residue. Use to regularly sanitize your spa or as a shock treatment for a quick chlorine burst. Powerful granular dichlor provides 56% available chlorine. Add directly to the water for immediate results. Sanitizer dosage rate: 2 oz. per 500 gallons.