pH probes. are they really meant to stay immersed in reef tanks 24/7?

[Snaz]

I don't have a glass pH probe for my tank but I have used them professionally in analytical labs and we had strict use and storage procedures to prevent them from degrading prematurely.

I remember that they must always be stored wet or preferably with the supplied manufacturer's ionic solution. They should not be immersed into an alkaline unless for measurement of a sample. Once testing is complete they need to be rinsed and stored again properly.

Question: What are the warranties included with the pH probes sold with reef controllers? Do you run through them quickly?