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What is stabilizer/Cyanuric Acid?

Cyanuric Acid, or CYA, is a chemical compound that protects chlorine from being destroyed by the sun. The sun’s ultraviolet (UV) rays will make the chlorine in an outdoor pool dissipate quickly. In fact, an ideal level of chlorine in an “unstabilized” pool or spa can be lost in less than two hours on a bright sunny day, due to the UV rays of the sun. Cyanuric acid acts as a “stabilizer” that helps chlorine hold up better when exposed to the UV rays. You can think of cyanuric acid as blocking the effect that the sunlight has on breaking down the chlorine-kind of like a sunscreen for your pool.

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