When should I use the soda ash calculator instead of aeration?
Use the calculator when pH is low and alkalinity also has room to rise. If alkalinity is already high, aeration is usually safer because it raises pH without adding more alkalinity.
Free Pool Tool | Ellis County, TX
Pool Soda Ash Calculator
Raise low pH carefully and understand when aeration may be the better answer.
Calculator
Enter your pool numbers
Fractions like 1/4 or 1/8 work in number fields. Results are planning estimates, not a binding service diagnosis.
Result
48 oz soda ash
If alkalinity is already high, raise pH with aeration instead of adding soda ash.
Pounds3 lb
Approximate cups6 cups
Pro Take
You can do this yourself. Or you can stop chasing it.
Low pH is often part of a bigger pattern. A&M can tune the whole water balance instead of trading one problem for another.
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How to test
Get the reading before you dose
Use pH and total alkalinity readings before choosing soda ash.
- Dissolve soda ash in a clean bucket before adding.
- Add with the pump running.
- Retest after full circulation before adding more.
Companion Guide
Raising Pool pH Without Wrecking Your Alkalinity
Read the paired blog post for the plain-English version of the chemistry, testing, and common homeowner mistakes.
Read the guideFAQ
Soda Ash Calculator FAQs
Why does the soda ash calculator only ask for pH and gallons?
This tool estimates a careful soda ash dose from pool volume and the pH change you want. Alkalinity still matters operationally, which is why the page warns you to avoid soda ash when TA is already high.
What should I do if the calculator gives a large soda ash dose?
Split large doses into portions, circulate fully, then retest pH before adding the rest. Overshooting high pH can force an acid correction and make the pool harder to stabilize.