Hi
I'm not that familiar with your Ph Controller.
But I'm sure that if you haven't re-calibrated your probe properly you will get discrepancies..with the readings.
If you take a probe out of the aquarium the Ph will rise on the monitor i think.
You should be calibrating the probe without returning it to the aquarium till the process has been completed.
The other scenario is that you cleaned the tip of the probe and it is recording a true reading.
Remember .02 swing should not cause major problems or cause algae.
hoggie
I'm not that familiar with your Ph Controller.
But I'm sure that if you haven't re-calibrated your probe properly you will get discrepancies..with the readings.
If you take a probe out of the aquarium the Ph will rise on the monitor i think.
You should be calibrating the probe without returning it to the aquarium till the process has been completed.
The other scenario is that you cleaned the tip of the probe and it is recording a true reading.
Remember .02 swing should not cause major problems or cause algae.
hoggie