The “why” behind the numbers — clear, sourced explainers on pool chemistry. Read up, then jump into the calculators to put it into practice.
Target ranges for chlorine, pH, alkalinity, CYA, calcium, and salt — and what happens when each drifts.
Coming soonUV destroys unprotected chlorine in minutes. Here’s the science and the fix.
Coming soonWhy no chemical removes CYA, and exactly how much water to drain to bring it back into range.
Coming soon