Should I add LC right after testing?


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

The goal is to NEVER let your FC fall below the minimum in this CYA/FC chart... FC/CYA Chart

You can add LC at anytime, but if you test FC at 8 am and don't add LC until 8 pm, how would you know you never went too low???


Jim R.


Well-known member
Sep 4, 2019
SW Ohio
Makes sense in those terms. Test and treat. I’ve read where some individuals prefer to add LC at night to protect from the sun and hopefully get the best benefit. I assume they test and treat at the end of the day.
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