CSI in Pool Math


Gold Supporter
Jun 16, 2019
I see this in Pool School:
"How is CSI calculated? Very simple – by using the PoolMath tool. Since CSI is primarily calculated by combining pH, TA, CH, and water temperate (among other items), simply enter your test results in PoolMath and refer to the CSI row. The tool will tell you if your water is balanced or if there is a potential for scale or erosion."

But I can't seem to find this in the app. Can someone give me a pointer as to where I can find this?


Mod Squad
TFP Expert
LifeTime Supporter
May 19, 2010
Tucson, AZ
Or you can just turn on tracking for CSI in the app and it will show up. I am not sure if you can see the calculated result without the tracking turned on or not.
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