Aug 6, 2007 · EDIT: You will find a simplified and standardized version of this chart at Pool School, Chlorine / CYA Chart. Chlorine/CYA Chart by Chemgeek FC = Free...

Feb 26, 2025 · Cyanuric acid (CYA) is the chemical name for the product commonly called “pool water stabilizer” or “pool water conditioner”. CYA protects free chlorine (FC) from the sun and protects …

Jan 5, 2026 · CYA not only protects chlorine from UV loss, but it also acts as a chlorine buffer. The active chlorine species (hypochlorous acid and hypochlorite anion) are kept at much lower …

Jun 30, 2022 · My CYA is 93. I've read varying advice about CYA levels for salt. The computer generated report from the local pool store says CYA should be between 80-150, so I was pretty …

Jan 6, 2026 · CYA protects your free chlorine (FC) from the sun, reducing the amount of chlorine you need to add daily. Too much CYA (more than about ~90 ppm), and it becomes difficult to maintain …

Aug 19, 2012 · My CYA level was zero or very close, so added the recommended amount on the packaging. How soon after adding can i add additional chlorine or shock? I've been battling algae …

Jul 23, 2016 · Why doesn't anyone manufacture 3" chlorine tabs without CYA in them? Is it not possible? Or if someone does, where can I buy it?

Sep 16, 2017 · PoolMath Discover the pool calculator behind the perfect pool, PoolMath. Dealing with pools has allowed TFP to become the original authors of the best calculator on the net. To help you …

Jan 4, 2025 · CYA Testing Follow the instructions for CYA Testing in Pool School. Read all of the notes in the Pool School article. Many people find the CYA test the most difficult to interpret and get …

Jun 20, 2020 · To increase CYA via granular stabilizer, place the required amount as calculated by the Poolmath calculator into a white sock and place in the poolside skimmer basket. For those …