Cl/CYA chart and pool math calculator

TTWB

Member
Jul 14, 2019
9
Annapolis, MD
Cl/CYA chart has three initial settings: liquid-slat-and SLAM
Should one want to SLAM the pool with a CYA of 50 for example the SLAM column is "20" FC.
Now going to the Pool Math calculator and entering 20 FC a warning is given "your target is out of range" or something like that.
If the Cl/CYA chart provides a suggested FC level, why does the calculator suggest it is out out of range?
What suggestion should be given to users to resolve this seemingly contradiction? Suggested 20 FC level and Out of range warning
 

HermanTX

Gold Supporter
May 20, 2020
2,552
Katy TX
Pool Size
14600
Surface
Plaster
Chlorine
Liquid Chlorine
On the overview page on PM app click on the FC group. You will see a slide button for SLAM. Turn it on so app knows you will be exceeding the normal recommended ranges
 
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