Understanding Adjusted Alkalinity
From Rule Your Pool by Eric Knight
March 8, 2026 · 9 min · Episode 182
About this episode
This episode discusses the concept of adjusted alkalinity in pool chemistry and its implications for acid dosing.
A pool store printout shows "adjusted alkalinity", but presented as if it's the "real" alkalinity. It is only used for LSI and pH ceiling calculations, not acid dosing. Acid doses are based on TOTAL alkalinity, because cyanurate and borate contribute to the TA, and acid will neutralize on them too.
People in this episode
Host: Eric Knight
Topics covered
- pool chemistry
- alkalinity
- acid dosing
- water balance
- LSI calculations
Keywords
- adjusted alkalinity
- total alkalinity
- acid dosing
- LSI
- cyanurate
- borate
Mentioned in this episode
Organizations: LSI, cyanurate, borate
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