Dive Into Success: 2026 Certified Pool Operator Practice Test – Make a Splash!

Over-stabilizing a pool with cyanuric acid can lead to reduced chlorine effectiveness. Cyanuric acid is used to stabilize chlorine, helping to protect it from being broken down by sunlight. However, when cyanuric acid levels exceed the recommended range (typically between 30-50 ppm), it can hinder chlorine's ability to sanitize effectively.

High levels of cyanuric acid create a condition known as "chlorine lock," where the available chlorine becomes less effective at killing bacteria and algae, making it more challenging to maintain proper water sanitation. This can result in a pool that looks clean but may actually harbor harmful microorganisms, posing health risks to swimmers.

It's important to regularly test and monitor cyanuric acid levels, ensuring they remain within the appropriate limits to maintain effective sanitation and overall water quality.