Ph probe interference?

[lnevo]

Also float switches could cause it too.

[najluni15]

Ok. I did a big water change etc on my tank today. I reset reef angel and immediately the ph went up to 6.7 (still wrong but closer). The protein skimmer was the only thing off at this time. As soon as the protein skimmer turned on the ph dropped down again. Now when I turn off the skimmer shouldn't the ph raise again? It seems to get stuck at the same number even when I restart the reef angel.

[jsclownfish]

It can take a little while for the pH to climb back up. For instance, when I calibrate I leave the probe in the calibration buffer for 5-10minutes to allow it to settle in.

Jon

[tmoore103]

Was this issue ever resolved? Sounds really similar to an issue I'm having.