HiNot sure what you are doing, but you need to get FC to target for your CYA and never let it drop below minimum.
Wasn't able to test yesterday and just now had the chance to do it today. So the levels at this time which is about 9:30...
pH - 8.2
FC - 3
CC - 1
HC - 125
TA - 130
CYA - 20
Your thoughts?