Mineral Ion Cartridge Filter Sticks for Spa Hot Tub Set of 3 Gray

The mineral ion cartridge brings you clean, crystal clear spa water without high levels of heavy chemicals. The active ingredient is zinc. (Inert ingredients are vitamin C, calcium sulfate, zeolite, attapulgite clay, zinc oxide and magnesium oxide.) A difference you can see, feel and smell, the spa mineral cartridge improves water quality. Easy to install and low maintenance, compatible with most spa maintenance products. Mineral filter stick is a simple option for you, enjoy your relaxing spa experience with peace of mind. Controlled mineral ion release technology, automatically dissolving traces of mineral elements in water. Mineral Stick works with existing filtration system, designed to fit most spa and hot tub filters, available for 24 hour flow.