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This document discusses chemicals that are important for maintaining swimming pools. Proper pool chemicals and pH levels are needed to prevent bacteria and algae growth in the water. Common chemicals used include chlorine, which is the most common sanitizer used to eliminate algae, bromine which is preferred for smaller tubs and spas, and other chemicals like soda ash, sodium bisulfate, and sodium bicarbonate which are used to regulate pH and alkalinity. Maintaining proper chemical levels is important for clean, clear pool water and attracting visitors to the pool.Read less