Types include ceramic rings sponges pads bio balls and bio stars sand and gravel.
Ceramic rings biological filter media.
While there are other types of ceramic based filter media ranging from spheres to sticks they all behave similarly to ceramic rings.
Bio pellets are a plastic media that house and feed bacteria.
Zeovit is part of a specialized system to maintain ultra low nutrients.
They simply provide a home for the bacteria that do all the hard work.
The micropores have a mild tendency to clog but can easily be clean and replaced.
Ceramic rings don t filter your aquarium.
Keep in mind that some of these materials can also be used as mechanical media.
Goldeal bio balls ceramic rings set aquarium biological filter media with mesh bag for fish tank and pond fish tank filter decorations accessories 500g 1 1lb 4 1 out of 5 stars 26 11 99 11.
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.
While fluval recommends these filters be replaced every six months they tend to last considerably longer.
Biological filtration media are like condominiums for bacteria.