Zero Chlorine: Why You Can’t Trust Breakpoint Math Alone

Zero free chlorine is not a small problem, it’s the moment a pool can start compounding into cloudiness, chloramines, and an algae bloom. We break down what’s really happening when a pool “zeroes out,” why filtration can suddenly struggle, and how to bring sanitizer back fast without guessing and hoping for the best. We start with the must-have testing mindset: total chlorine, free chlorine, and combined chlorine (chloramines). Once you know your combined chlorine level, breakpoint chl...