Minerals ion cartridge brings you clean and crystal clear spa water without high levels of heavy chemicals.Active ingredient is zinc.(inert ingredients are vitamin c,calcium sulfate,zeolite,attapulgite-type clay,zinc oxide and magnesium oxide.)A difference you can see,smell and feel,spa mineral cartridge improves water quality.Easy to install and low maintenance,compatible with most spa maintenance products.Mineral filter stick is a uncomplicated option for you,enjoy your relaxing spa experience with a mind at ease.Controlled mineral ion release technology, automatically dissolving trace amounts of mineral elements into the water.Mineral Stick works with existing filtration system,designed to fit most spa and hot tubs filters,available for 24 hours flow.", When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy itProducts from GuanGuan's store