3” Trichlor Tablets 200g Stabilized chlorinating tablets. Controls bacteria and algae in swimming pool water. 90% Available Chlorine, 100% Water Soluble These 200g chlorine tablets are the perfect solution for keeping your swimming pool clean and sparkling all season long! With a slow-release formula, these tablets provide long-lasting protection against bacteria and algae, ensuring crystal-clear water for you and your family to enjoy.