Ceramic rings don t filter your aquarium.
Ceramic rings biological filter media.
While fluval recommends these filters be replaced every six months they tend to last considerably longer.
While there are other types of ceramic based filter media ranging from spheres to sticks they all behave similarly to ceramic rings.
Many hobbyists use highly porous ceramic plates or bricks housed in the sump.
Biological filtration media are like condominiums for bacteria.
Bioballs and ceramic rings are two basic biofilter choices.
Types include ceramic rings sponges pads bio balls and bio stars sand and gravel.
Marineland ceramic filter rings 140 count supports biological aquarium filtration fits c series and magniflow 140 rings pa11484 4 7 out of 5 stars 935 3 59 3.
The micropores have a mild tendency to clog but can easily be clean and replaced.
Bio pellets are a plastic media that house and feed bacteria.
Keep in mind that some of these materials can also be used as mechanical media.
They simply provide a home for the bacteria that do all the hard work.