EHEIM Substrat 620g 1l Biological Filter Media 2509051

The main task of biological filter media is to offer the best colonisation onditions for the bacteria cultures, so that after a short time a bacteria lawn develops. The bacteria feed on dirt particles of all kind and convert substances critical for the aquarium.After the first cleaning process by the mechanical filter media (e.g. EHEIM MECH or MECHpro) the biological filtration is the most important. It provides for clear, healthy water and stabile water values. That's why we have invested a lot of research work into the development of biological filter media.EHEIM SUBSTRAT:- Standard bio-filter medium with large colonisation area for bacteria cultures and high efficiencySUBSTRAT can be layered in one or more layers. It is a highly porous filter material made from sintered glass. The surface structure offers the important purification bacteria excellent colonisation conditions. The colonisable area amounts to 450 m² per litre.EHEIM SUBSTRAT is washable and can be reused.Features:- Standard bio-filter medium- Highly porous material made from sintered glass- Excellent conditions for bacteria cultures- Reusable (rinse carefully to clean)Specifications:- Biological: Yes- Freshwater: Yes- Width: 140 mm- Height: 177 mm- Depth: 73 mm