Great
Leisure Time so far has the best products for hot tubs.
Leisure Time Metal Gon and Defender are a powerful stain and scale prevention duo. Used together, these proprietary formulas 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.
Features:
Applications:
Weekly:
See individual product labels for detailed application instructions.
Compatible With:
Chlorine, bromine, ozone and biguanide sanitizers.