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It is widely known that pH controls the strength and efficacy of chlorine. And that's true, except when Cyanuric Acid (CYA) is in the water. CYA changes the entire dynamic, and that's what we discuss in this article.
In the event of an Accidental Fecal Release (AFR), the CDC has published a recommended limit of Cyanuric Acid (CYA) at 15 ppm for commercial swimming pools. The vast majority of outdoor pools in America have far more than 15 ppm of CYA already, so what can be done?