Liquid algicide that acts penetratively in water as an algae inhibitor and helps enhance the chlorine's effectiveness. When algae enter the water, they can create stains on the pool walls or floor, and additionally, extreme weather conditions, the presence of nitrogenous materials, and sudden changes in the water's pH value, promote algae growth. By adding chlorine to the pool water and then supplying it with algicide, you can control and prevent the reappearance of algae.