BioMech is cleverly designed. Coarse and fine dirt particles get trapped in dirt-catching pockets and are held back. At the same time, a well-thought-out pore structure promotes the colonization of cleaning bacteria, ensuring reliable biological degradation performance. The material is pH-neutral and contains no hardness formers. Eheim BioMech is suitable for both freshwater and saltwater, is washable, and can be reused multiple times.