Ideal pool total alkalinity range
What is Total Alkalinity?
Total alkalinity measures the water's ability to resist pH changes, acting as a buffer that keeps pH from swinging wildly every time a chemical is added.
Why it matters
Low alkalinity causes "pH bounce," making the pool hard to keep balanced and more corrosive to surfaces and equipment; high alkalinity can push pH stubbornly upward and contribute to cloudy water or scale.
How to raise TA
Add baking soda (sodium bicarbonate) in stages, retesting after each addition since it also nudges pH upward slightly.
How to lower TA
Add muriatic or dry acid in small doses, then aerate the water (fountains, waterfalls, or agitation) afterward to help pH stabilize once alkalinity drops.
How often to test
Weekly, and most pool professionals recommend checking it before adjusting pH since alkalinity is typically balanced first.
Get the exact dose to bring TA into range for your pool's volume — free, instant, no sign-up.
Related parameters
Track this with Skimmer — log water tests and keep every reading in one place.
See pricing →