CMP Pool Defender Zinc Anode Puck Kit | 25810-009-950

Sanitizers cannot effectively kill bacteria if your pH and Alkalinity are out of range, making water balance the essential foundation for any sanitizer.

Regular testing is the only way to ensure your sanitizer levels are within the safe "Goldilocks" zone—neither too low to be dangerous nor too high to be irritating.

Adding an algaecide provides a secondary layer of defense, ensuring that if your sanitizer levels accidentally dip, your pool won't immediately turn green.