Nature2 Spa Mineral Sanitizer
Nature2 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.