Recheck volume, test reading, product strength, density or purity, and the selected target.
Water balance calculator
Total alkalinity
Plan sodium-bicarbonate additions from product purity and tested alkalinity.

Measured inputs
Plan a staged increase
Use fresh test results and confirm every product value against its label.
Staged treatment plan
1,906 g full amount
Start with 953 g (33.6 oz), circulate as labeled, then retest.
Product effectsRaises total alkalinity; pH response varies and is not predicted here. Adds sodium and contributes to TDS.
- Formula
- CaCO3-equivalent demand × sodium-bicarbonate conversion ÷ purity
- Assumptions
- Sodium bicarbonate equivalent: 1.6787 g per gram of alkalinity expressed as CaCO3. 50% staged-dose planning factor; product label controls.
- Source
- Water-balance methodology · verified July 22, 2026
How to use this result
A planning quantity, not an instruction to pour.
Use the label’s application method, protective equipment, maximum dose, spacing, and re-entry directions.
Never combine chemicals. Add one product at a time with circulation as directed.
Start with the staged amount, allow the label-directed circulation time, and measure again.