Is this normal?


Well-known member
Oct 8, 2015
San Diego, Ca.
For the past few years my pool has lost 20 ppm of CYA annually.

No rain over flow or splash out occurs.

Some how I got the idea that CYA didn't leave once it was in?


Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
Bedford, TX

I have three pools all in the same basic area... All three of them do the same thing... All three pools are saltwater pools that I run with a CYA of 70 to 80... over the winter the CYA will drop to 30 or 40.. they have done the same thing for at least the past 4 years...


Jim R.