Check the listing for details. Leisure Time Metal Gon 16 oz - 2 Pack. Condition: New. Listed at 32.99 USD. Leisure Time Metal Gon is the ultimate solution to preventing metal buildup in your spa. This easy-to-apply concentrated formula is specially designed to neutralize iron and other metals that could cause unsightly stains on your spa finish. With just one application, Metal Gon can protect your spa until the next refill, making it an efficient and cost-effective solution to metal buildup. Product Features: Prevents iron and other metal buildup from staining spa finish One time application - good until next refill 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 Compatible with chlorine, bromine and biguanide sanitizers Dosage: Turn off ALL equipment Pour entire bottle contents evenly around spa edge Run filter for at least 30 minutes