I know that if FC gets too high then the PH numbers will be off. Question is are PH numbers the same at FC levels of 4, 6, 8 (all in range of my CYA of 50) I am seeing some PH bounce around over the last week or so from 7.4 to 7.7-7.8(not quite the color of 7.8 but not 7.6). I didn't record the FC when I did the testing so the FC could be between 4-8 which is where I try to keep it. I know my TA is low but it was recommended here to leave it be unless you are getting PH bounce. I wish there was a drop test for PH like all the other test we do , trying to look at a color is pretty subjective to lighting.
FC 8.0
CC 0.0
OCLT 0.0
CYA 50
PH 7.7
TA 60
CH 110
FC 8.0
CC 0.0
OCLT 0.0
CYA 50
PH 7.7
TA 60
CH 110