Shock the pool by adding chlorinating liquid or 6% unscented bleach. The increase in chlorine demand and the cloudiness was algae starting to grow. Your Free Chlorine (FC) level got too low relative to your Cyanuric Acid (CYA) level and allowed algae to grow. Read the[/url] http://www.troublefreepool.com/pool-school/PoolSchool[/url] for more info on how to
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