Filter material mechanical
It 'a filter material, that is a substrate for bacteria (bacteria in the aquarium filter are used to decompose the fish waste and to eliminate the powerful poisons that are created during the organic decomposition). Being in an aquarium the concentration of organic matter decomposing very high in relation to the quantity of water, it is obvious that we need a bacterial culture very consistent and very active. Since these bacteria bound to a substrate is obvious that this substrate must be the most 'big as possible. The effectiveness of a filter in an aquarium is given solely by the ability to provide optimal conditions for the bacteria settlement. Evening biopur provides optimal living conditions for bacteria that require oxygen and form biofilms. These nitrifying bacteria need larger areas and rough, but not too porous. A large internal diameter of the razor ensures a water flow and allows optimal filtering for long periods of time without having to be removed. Before first use the evening biopur must be rinsed thoroughly. For filtering in freshwater, marine and pond.