Hi and welcome. Sorry to disagree with a fellow member but......I will anyway
Providing you use a fine, first stage, mechanical filter media (ie white woolen media) then your ceramic rings (AKA. noodles) need very little maintanence.
I shake mine in old tank water about once every 6 months or so and even then not the same time as I do the foam media.
I'm still using some of the noodles from when I first started 5 years ago!
Many filter manufacturers suggest you do all sorts of regular replacements. Ignor this as it is purely a money grabbing ploy on their part!
Finally.........Remember, a sparkling clean filter is no use to man or beast!