The Filtermax™ Tannin Filter is designed to eliminate tannins that cause yellow staining, unpleasant taste, and poor water clarity. Using ion-exchange resin, it removes tannins from well and surface water, leaving clean, clear water throughout the home. Its computerized valve automates regeneration for convenience, and additional neutralizing filters can be added to balance pH. Families enjoy better-looking laundry, stain-free fixtures, and fresh-tasting water. With models backed by warranties of up to 10 years, the Tannin Filter provides effective, lasting relief from tannin issues