5 Things to Know About Saltwater Pool CYA Levels

Keep CYA between 30 and 50 ppm This range prevents chlorine lock. Too much CYA—above 80–100 ppm—binds chlorine so tightly it can’t sanitize.

Test monthly with a drop-based kit Test strips are less reliable. A good drop kit gives accurate readings for adjusting CYA.

Add stabilizer if CYA is under 30 Use cyanuric acid according to the label. For saltwater pools, aim for 30–40 ppm because the generator produces chlorine steadily.

Drain and dilute if CYA exceeds 50 No chemical removes CYA. Draining and refilling is the only reliable fix, especially above 80 ppm.

Lower CYA works best for saltwater pools Saltwater generators make chlorine slowly, so you don’t need as much UV protection. Keeping CYA on the low end avoids waste and lock.