Pool Chemistry Truths: Chlorine, pH & CYA with Eric Knight

Most pool pros have heard it for years: lower the pH to make chlorine stronger. That’s true in non-stabilized water, but once cyanuric acid enters the picture, the rules change. We sit down with Eric Knight to unpack why the FC-to-CYA ratio, not pH, governs chlorine’s effective strength in outdoor pools—and how that insight can save you time, money, and a lot of acid. We break down the chemistry in plain language. You’ll hear how chlorine splits into hypochlorous acid and hypochlorite ion, w...