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The mineral cartridge releases minerals that help balance the pH
use the Vanishing XL
Soften hard water without chemical additives
Oxidizer Sanitizer Silver Ion
Nature2 Spa Mineral Sanitizer Chemicals The mineral cartridge releases mineralsNature2 Spa Mineral Sanitizer cartridges substantially minimizes the need for bromine, but still provides your spa water with a powerful cleansing solution. This sanitizer can support a spa up to 500 gallons. Simply place it in your spa filter for hassle free maintenance. The sanitizer is EPA approved and uses an exclusive mineral technology that cleanses your spa water without abrasive chemicals. One cartridge lasts about four months.