Hi,
I have an interesting issue with my pH probes. I have two probes in the sump of my 320 litre frag tank, one made by reef factory (probably better known in Europe/UK) and the second device by Neptune running in conjunction with my Apex.
Both are calibrated, the Apex probe with the 7 and 10 solutions, whilst the reef factory probe uses 4 and 7 solutions. I was hoping that Reef factory were going to change their calibration solutions to bracket sea water values, but that has not happened yet.
Here is the conundrum, the reef factory reads higher than the Apex probe by approximately 0.46 of a pH measurement. I have recorded and graphed a 24 hour period of both probes. I dose Kalk overnight, only 0.5 litre. I am trying to figure out which probe is giving me a more accurate representation of my tank's pH? As you can see both curves follow each other quite well.
Thanks for looking
Julian
I have an interesting issue with my pH probes. I have two probes in the sump of my 320 litre frag tank, one made by reef factory (probably better known in Europe/UK) and the second device by Neptune running in conjunction with my Apex.
Both are calibrated, the Apex probe with the 7 and 10 solutions, whilst the reef factory probe uses 4 and 7 solutions. I was hoping that Reef factory were going to change their calibration solutions to bracket sea water values, but that has not happened yet.
Here is the conundrum, the reef factory reads higher than the Apex probe by approximately 0.46 of a pH measurement. I have recorded and graphed a 24 hour period of both probes. I dose Kalk overnight, only 0.5 litre. I am trying to figure out which probe is giving me a more accurate representation of my tank's pH? As you can see both curves follow each other quite well.
Thanks for looking
Julian