higher FC and CC


Silver Supporter
May 8, 2020
Dardenne Prairie, MO
We’ve have had lots of cloud cover and rain the last couple of days.

With that, the Stenner has continued to do its job and deliver the dosing it’s programmed to do, and because the dosing was based on FC losses typical of high UV summer days, the FC has drifted up. Its on the nine-ish range now. But, CC is also up. Nothing alarming, but it’s been .4 and then .6 today.

So the question is, should I expect elevated CC levels with rain and higher FC?
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Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
Laughlin, NV
You should consider doing more diagnostics if you test above 0.5 ppm CC using a 10 ml sample. No reason to test FC with a 25 ml sample.