As the water enters the filtration cycle, water is swirled through the ceramic hollow ceramic rings, and the larger dirt particles then sink to the bottom. The water then continues its way through the other filter layers.

Along with being able to trap coarse dirt particles, the surface structure also allows for the colonisation of friendly bacteria, providing a biological filtering process.

This high-quality ceramic media is reusable, and allows for easy, residue free cleaning. MECH is ideally suited to be used in combination with Eheim SUBSTRATpro or BioMECH.

Eheim MECH is completely water neutral and is suitable for both freshwater and saltwater filters.

EHEIM filter medias are some of the best in the world. They are highly efficient, developed in their own research laboratories, and made from the best raw materials. They are continually checked and are guaranteed to be free from any harmful substances.