HOTUB 3 SPA Mineral Ion Cartridge Filter Sticks for Hot Tubs (3, Grey)

The mineral ion cartridge provides you with clean, crystal-clear spa water without high levels of heavy chemicals.

The active ingredient is zinc. (The inert ingredients are vitamin C, calcium sulfate, zeolite, attapulgite-type 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.

The mineral filter stick is a simple option for you; enjoy your relaxing spa experience with peace of mind.

Controlled release mineral ion technology automatically dissolves trace mineral elements in the water.

The Mineral Stick works with your existing filtration system, designed to fit most spa and hot tub filters, available for a 24-hour flow rate.