Mineral cartridge for J-300 & J-400 series spas. Keep your spa's water clean and smooth over time. Used in conjunction with chlorine or MPS, Jacuzzi's Pro-Clear II Mineral Cartridge is snapped into the filter cap of 2005+ J-300 and J-400 series hot tubs to reduce odors and residue. Should be used with an ozone system, and requires a small amount of non-chlorione oxidizer. Do not mix with bromine and bromides, and is not compatible with Biguanides. Replace every four months.
