Arm & Hammer Clear Balance Pool Maintenance Tablets, 16 Count, Net Wt. 7LB (3.1kg) Maintain pH and alkalinity while optimizing chlorine performance Naturally clears up cloudiness and maintains clarity Pool chemicals such as sanitizers, flocculants, etc., will work more effectively Prevents costly corrosion and staining to masonry and synthetic pool surfaces Convenient and no measuring. Water feels better on your skin and eyes.