Apex users how often to replace probes?

[doubleshot00]

Hos often do people replace probes or do we just wait till they completely stop functioning?

 

[ScubaFish802]

Sounds like maybe 2-3 years or so https://www.reef2reef.com/threads/how-often-do-you-change-ph-probe-on-your-apex.188082/page-2

 

[bushdoc]

As above, just replaced mine.

 

[dwest]

I’m on year 4 of my pH probe. I plan to replace this year, although I don’t see a reason to yet.

My temperature probe died sometime in year 3. It was off by over 5 degrees and couldn’t be calibrated. I lost a couple acros due to this.

I haven’t replaced the salinity probe. I removed the ORP probe and function a while ago.

 

[Jason_MrFrags]

every 2 years, but I have backups on hand of everything.

 

[CasperOe]

Fairly new to Apex, but with my previous bit of kit I'd simply replace the probes once they were worn out. Waste of money to replace them before; if they calibrate well and gives acceptable reading then don't limit yourself by setting dates for replacements.

I do have a spare PH probe in the house; I have no spare for ORP, Salinity or Temperature (.. I should probably have for temperature!)