<p>The mineral ion filter brings you clean, crystal clear hot without high levels of heavy chemicals.</p> <p>The active ingredient is zinc. (The inert ingredients are vitamin C, calcium sulfate, zeolite, attapulgite clay, zinc oxide, and magnesium oxide.)</p> <p>You can see, smell and feel the difference as spa mineral filters improve water quality.</p> <p>Easy to install and low maintenance, compatible with most spa maintenance products.</p> <p>Excellent cleanability allows your hot tub filtration system to release maximum filtration power when cleaned, reducing spa maintenance costs.</p> <p>Maximize your spa's performance, reduce energy costs, and reduce operating stress on your filters and hot tub, extending their lifespan with Mineral Technology.</p> <p>Superior high-efficiency filtration material designed for durability and cleanability, the reinforced mineral filter rod can be used with both cold and mild hot water spas.</p> <p>Colour:grey</p> <p>Material:plastic+metal</p> <p>Package Contents:</p> <p>3 x filter rod</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>