3 Inch Chlorine For Swimming Pools & Spa Tablets Kills Bacteria Algae 4-In-1

Protect your indoor and outdoor swimming pool against bacteria, algae, and other organisms and enjoy clean, clear water with HTH Super 3" Chlorinating Tablets. Easy to use and slow dissolving to provide a steady source of free available chlorine, one tablet treats 10,000 gallons of water for up to one week.