Pinpoint pH probe changing routine...

[slash7]

They should easily last 18 months. When you can no longer calibrate, it's time to change.

 

[plankton123]

If you keep the probe away from where you add additives (e.g. Kalkwasser, CaCl, etc) the probe will last alot longer. Also, probes are fragile so make sure it is not pumbing against the side of your sump, etc or the tube might crack, etc. Otherwise, when the probe won't calibrate any longer is time to buy another.

 

[monkeyboy]

How often do you change your Pinpoint pH probe? I've heard every year. TIA