Water Chemistry
Water-chemistry dosing from your measured readings: chlorine, breakpoint shock, pH (muriatic acid / soda ash), total alkalinity, cyanuric acid and calcium hardness — all as ppm math for planning. Estimates only; never mix chemicals and re-test before swimming.
Safety: Dosing results are estimates. Always follow the product label, add one chemical at a time, never mix pool chemicals, add chemical to water (never water to chemical), store safely out of reach of children, and re-test the water before swimming. Add about ¾ of the dose, re-test, then adjust. Not a substitute for professional pool service.
ChlorineHow much liquid chlorine, cal-hypo or dichlor to add to raise your pool's free chlorine to a target ppm, with the formula and a worked example.ShockHow much cal-hypo, dichlor or liquid chlorine to shock your pool to a target free-chlorine level, with the breakpoint formula and a worked example.pHEstimate the muriatic acid to lower pool pH or the soda ash to raise it, based on your volume and alkalinity, with the formula and a worked example.Total AlkalinityHow much baking soda to raise your pool's total alkalinity to a target ppm, or acid to lower it, with the formula, an example and a dosing FAQ.Cyanuric AcidHow much stabilizer to raise your pool's cyanuric acid to a target ppm, or how much water to drain to lower it, with the formula and an example.Calcium HardnessHow much calcium chloride to raise pool calcium hardness to a target ppm, or how much to drain to lower it, with the formula and an example.
Every Water Chemistry tool is calculated server-side — visible immediately — with its formula, a worked example and a reference table. Background reading is in the guides.