Wait… Is This Normal in Your Pool?

Your pool can look perfect and still be one bad day away from turning. We dig into the “normal vs not normal” moments that confuse pool owners and even trip up seasoned techs, starting with the big one: chlorine that disappears overnight. When free chlorine drops to zero in 24 hours, it’s rarely magic and usually chemistry. We talk through cyanuric acid (CYA) targets, intense UV exposure, early microalgae you can’t see yet, and why high phosphates can quietly increase chlorine demand so your ...