New in box. 3 filters. See photos

HOTUBJOY Mineral Ion Cartridge Filter Stick Brings Crystal Clean Water.

-Powerful filter capacity up to 10000Gallons/37855L,low maintenance with a duration up to 6 months.

-Hotubjoy is an easy and uncomplicated option for you,enjoy your relaxing spa and pool experience with a mind at ease.

-Pool mineral cartridge filter stick is easy to install and low maintenance,compatible with most water maintenance products.

-Mineral filter cartridge works with existing filtration system,designed to fit most pool and hot tubs filters,available for 24 hours flow.

-Mineral cartridge stick will not affected by heat or swimmer load,simply add onto your preferred water care system for the best water.

-Controlled mineral ion release technology,hotubjoy mineral system automatically dissolving trace amounts of mineral elements into the water.

-A difference you can see,smell and feel,mineral filter stick improves water quality,brings you clean and crystal clear water without high levels of heavy chemicals.

-Mineral cartridge reduces premature damage to your pool/hot tub equipment or surfaces associated with chlorine,you won’t have to worry about unknown ingredients.

-Active ingredient is zinc.(inert ingredients are vitamin c,calcium sulfate,zeolite,attapulgite-type clay,zinc oxide and magnesium oxide.)