HI All!
TL;DR: Why would an Apex Jr and Apex Pro report pH numbers that are ~.20 different and Temp ~0.8 different? Am I worrying over nothing? Is that variance normal?
Here's the long version.
I installed a new Apex Jr system in my 90g tank a few days ago, went through the pH calibration, etc., and all seemed fine. Then, I ended up getting another brand-new (sealed) Apex Pro yesterday.
The pH manual calibration on the Pro kept failing on the 10 solution. Repeatedly. Automatic calibration would usually complete. I even tried different solution and it would still fail on the 10. I swapped the Jr pH probe and the Pro probe between systems and re-calibrated both. (the second pH probe still gives calibration issues even on the Jr system)
All probes are in the same rack in the sump of the Reefer 350 so there should be no variance.
Am I being ridiculous to want the pH to be closer than 0.2 off? Am I driving myself crazy or should I contact Neptune?
Thanks for helping me work through my OCD.
TL;DR: Why would an Apex Jr and Apex Pro report pH numbers that are ~.20 different and Temp ~0.8 different? Am I worrying over nothing? Is that variance normal?
Here's the long version.
I installed a new Apex Jr system in my 90g tank a few days ago, went through the pH calibration, etc., and all seemed fine. Then, I ended up getting another brand-new (sealed) Apex Pro yesterday.
The pH manual calibration on the Pro kept failing on the 10 solution. Repeatedly. Automatic calibration would usually complete. I even tried different solution and it would still fail on the 10. I swapped the Jr pH probe and the Pro probe between systems and re-calibrated both. (the second pH probe still gives calibration issues even on the Jr system)
All probes are in the same rack in the sump of the Reefer 350 so there should be no variance.
Am I being ridiculous to want the pH to be closer than 0.2 off? Am I driving myself crazy or should I contact Neptune?
Thanks for helping me work through my OCD.