Boyu ceramic rings are an ideal biological filter material for freshwater aquariums, planted aquariums, ponds, saltwater aquariums and reefs. The Boyu Ceramic Rings – CR500 model is particularly popular among aquarium enthusiasts for its effectiveness and durability. In fact, many experts recommend Boyu Ceramic Rings – CR500 due to its outstanding filtration results.

BOYU ceramic rings are a biological filter medium made with ceramic materials fired at high temperatures and pressures. This process creates an excellent microporous structure without losing mechanical consistency. Also, the Boyu Ceramic Rings – CR500 is especially recognized for these qualities.

These rings provide an ideal environment for the proliferation of various beneficial bacterial colonies in the aquarium. These colonies help to break down waste proteins and process them into nitrite and nitrate.

This material is 100% inert and non-toxic to fresh and salt water. As a result, it delivers great performance for a long period of time.

This medium is one of the best options for performing biological filtration in an aquarium. It has high performance in a very small space. For powerful and compact filtration, Boyu Ceramic Rings – CR500 is a top choice.

It can be used in basket filters as well as “backpack” filters, “Back Filters”, “Top Filters” and dry wet or percolation filters installed in sumps.

It is highly recommended to place them with prior mechanical filtration so that their small pores do not become saturated.

This material simultaneously houses both aerobic nitrifying bacteria and anaerobic denitrifying bacteria in an ideal environment for their optimal proliferation. Because of this, many aquarists opt for Boyu Ceramic Rings – CR500 to meet both these bacterial needs efficiently.

It is completely safe and harmless to all aquatic organisms, chemically inert to water, toxin-free and with very high mechanical consistency.