SpaPure Oxidizing Shock is a granule form pool chemical designed for use in hot tubs and spas. With an EPA registration number of 53735-12, this shock oxidizer is manufactured in the United States by the brand SpaPure. This product is specifically formulated to quickly oxidize contaminants and maintain water clarity in spa and hot tub environments. Ideal for boosting chlorine levels and eliminating algae or organic matter, SpaPure Oxidizing Shock is a reliable and effective solution for maintaining a clean and hygienic swimming experience.