Glass Ceramic Bio Ring S - 5l

Glass Ceramic Bio Ring S - 5l  is the most efficient biological filter material available, due to its enormous surface area in relation to its volume. This property is obtained by heating the glass to temperatures at which it approaches a gaseous state and then rapidly cooling it. Just like a corn kernel that turns into popcorn, the surface of the glass expands when overheated, albeit by a micron.
This results in a 10 times larger surface area and thus a much better ability to accommodate the nitrobacter group. These are the bacteria that break down toxins in the aquarium. In this way, the breakdown of ammonia and nitrites becomes much more efficient than conventional ceramic filter materials measured at the same volume. In other words, your filter can be reduced in size and have a lower energy consumption, without a corresponding reduction in vital function.