Leisure Time Metal Gon and Defender 1 Bottle
Each is a powerful stain and scale prevention duo. Metal Gon and Defender, when
used together, can prevent and inhibit stains and scale buildup. Defender
protects spa surfaces, heaters and other equipment from calcium buildup, while
Metal Gon prevents the iron, copper and other minerals sometimes found in fill
water from staining the spa surface. Compatible with chlorine, bromine, ozone
and biguanide sanitizers.