pH probe reminder

[Dador]

I left a lighting reminder a while back so here I am with a chem reminder. My pH probe monitor started alarming last night showing a drop from 8.3 to 5.77!!!

My immediate reaction was to charge for the kalkwasser! I controlled myself and remembered Matts Go Slow and let it grow. I regained my composure and started my testing.

First a quick dip stick. Nice and pink! 8.4! Feeling beter but not confident I pulled out the test kit and started sampling and dripping. 8.3-8.4

Ok time to calibrate the probe. Calm, calm, set the slope. Perfect. Dip the probe. 7.7

Time for a new probe? Or does anyone have a better suggestion? I leave it in refuge. That couldn't effect it? I cleaned the probe gently and cleared with RO/DI.

[reef_guru]

my pH probe is in the sump, its about 5 years old, every 3 months or so i soak it in vinegar, havent recalibrated it in awhile and its still registering correctly. i know this since i have two of them and both read the same.

[Dador]

Vinegar. Thanks I'll try that. Any softies left?

[Otty]

Let me guess was it a Pin-puke probe?? I just had one go bad and I will never get another one. Rather spend the extra money on a better probe and have piece of mind.

[Dador]

No. It was a reef fanatic. I tried the vinegar soak. Still no go.

[reef_guru]

if cleaning didnt work its time for a new one

[Dador]

Yup! Just ordered it....