Big pH drop 8.2 to 7.6 in 30 minutes

[SoCalVictor]

My APEX is showing a large pH drop from 8.2 to 7.6. I'm hoping it's a failed probe because my Salifert test shows 8.2

Coincidentally, I just set up my Kalkwasser reactor early this morning and plumbed it to push it into my system every time the ATO kicks on. Just trying to have some peace of mind or get some insight into whether there's a true pH drop

 

[Lorenzo Angotti]

Hi, don’t know much about the Apex, if your unsure you trust your Salifert test depending that’s it is in date, I would make sure you water is getting oxygenated, that’s by pointing your wave pump more to the surface to agitate , open a window to let fresh air in or add an air stone to the sump until your sure wether it’s a faulty probe that probably just want a good clean.

 

[SoCalVictor]

Just figured out it was something wrong with the pH probe as I got a second manual pH test that confirms it's within range.