These 3" slow dissolving chlorinating tablets with 90% contaminates and controls algae. Our chlorinating tablets Available Chlorine: 90%

• available chlorine which kills bacteria
• destroys organic are recommended for use in automatic chlorinators
• floaters
• and skimmers. Kills bacteria
• destroys organic contaminants and controls algae
• Sun protected for extended chlorine life
• Concentrated
• Stabilized
• 99% Trichloro-s-triazinetrione