Pillar 4: Minimal Cyanuric Acid (CYA) | Orenda's Four Pillars
Rule Your Pool - A podcast by Orenda Technologies, Eric Knight

Our fourth pillar is about minimizing Cyanuric Acid (CYA). CYA, also known as chlorine stabilizer, protects chlorine from sunlight degradation. Some is good, but too much is bad. The action step is simple: keep your CYA below 50 ppm.