Hay
Just wondering, I have a Rena Filstar XP2 on a 33 gal, I usually run the top micro filter and the 4 bottom sponge filters under the tap every week or two, and replace the medium ( 1 cup of AMMO-CARB in a home made bag ) once a month. Haven't done anything to the ceramic rings.
I'm interested in other peoples routine when cleaning their filters.
Thx
MarkJ