EHEIM Ehfi Mech Hollow Ceramic Rings 2L - Mechanical Filter Media
Prefilter material made from hollow ceramic rings for trapping large dirt particles
Directly after entering the filtration cycle, water is swirled through the hollow ceramic rings. Larger dirt particles thus sink to the bottom. The treated prefiltered water then continues its way through the other filter layers. EHEIM MECH is easy to clean and reusable.
Aquarium Kingdom Tips
When cleaning your filter always use water from the aquarium, not tap water. This will keep the good bacteria alive, so they can recolonise the filter media faster after cleaning.