Protect your indoor and outdoor swimming pool against bacteria algae and other organisms and enjoy clean clear water with 3 Chlorinating Tablets. This stabilized chlorine sanitizer comes in 3 tablets for use in feeders floaters and skimmers; it s also compatible with saltwater systems. Easy to use and slow dissolving to provide a steady source of free available chlorine It is recommended to use 4-5 tablets per 5000 gallons of water per week. These chlorine tablets are formulated with cyanuric acid to help protect against chlorine loss due to sunlight and they have built-in algae protection and clarifier.