errant pH readings ?

[Proteus]

If I ran a ca reactor I would monitor ph. But until then. My tank was always stable. If you really want aquavitro has a great buffer that will not raise over 8.3.

But until I see fish loose direction or inverts fall apart I won't worry

I highly doubt that the oceans them self are constant considering co2 is absorb and released with flux in temp and agitation. The ocean is the largest source of co2 in our world.