Metal Gon, easy to apply this concentrated forumula prevents iron and other metals from building up in your spa. Use with each refill to quickly nuetralize metals in your spa and prevent unsightly stains.
Prevents iron and other metal buildup from staining spa finish
One time application - good until next refill
Chlorine, bromine and biguanide sanitizers. The best time to treat for metals is when you first fill the spa or drain and refill the unit. Using Defender each week will control metals after the application of Metal Gon at start-up. 16 oz. Start-Up: 1. Turn off ALL equipment. 2. Pour entire bottle contents evenly around spa edge. 3. Run filter for at least 30 minutes.