Spa Defender (1qt) helps to prevent and inhibit calcium stain & scale build-up for protection of spa surfaces, heaters and other equipment. It prevents scale formation and helps to aid in the removal of existing scale. Control of calcium can be very challenging, especially in hot tubs. Regular use of Spa Defender will help to prevent mineral build-up from occurring which could cause the hot tub's heater or equipment to fail. Use as a follow-up to Metal Gon. Spa Defender is compatible with chlorine, bromine, ozone and biguanide sanitizers.
Note: We recommend having your water tested professionally either every 2 weeks or once a month to ensure all chemical levels are correct. This will help maintain crystal clear water & extend the life of your spa.