Plain-language guides to help you understand your water — no chemistry degree required.
New pool owner? Skip the overwhelm. These are the only five readings you need to understand — what each one does, what range to aim for, and how often to test.
Order matters. Fix alkalinity, then pH, then chlorine — and your water balances in one pass instead of three. Here's the step-by-step process.
Your pH and chlorine can look perfect while your water silently corrodes your pool. The Langelier Saturation Index is the one number that tells the whole story.
Your test kit gives you two chlorine numbers. One matters more than the other — and the gap between them is a warning sign most pool owners miss.
