CYA question

DIYLinerPool

Well-known member
Sep 28, 2020
53
Chicago (West Suburbs), IL
Pool Size
16000
Surface
Vinyl
Chlorine
Liquid Chlorine
Hi all - just got my tf100 test kit and tested the cya on my new liner pool I just filled a month or so ago. It is around 25. I am currently using tricolor tablets in an inline chlorinator. Should I just continue to use the tablets and test the cya more frequently (ie weekly) and stop when it gets around 40 or so? Or should I raise it a different way.
Also I have an automatic pool cover that I close daily , not sure if that affects my target cya level or not….

thanks!
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
43,651
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
If you keep the pool covered during daylight most of the time, you can follow that process. Realize that your FC needs will increase as your CYA increases. The trichlor will not likely add enough chlorine each day, if you have the cover open and/ or swim. So test often.
Also watch your pH. Trichlor is very acidic.
 
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