Oase BioSmart Flow-Through Biomechanical Filters Model:BioSmart 5000 The EPDM rubber membrane is

The EPDM rubber membrane is wrapped around a hollow plastic tube

SKU: Description:   BF250  Fits Bioforce 250 - 1 pad with 2

and is especially recommended for Ranchu

The Oase BioTec ScreenMatic Large Pond Filters are flow-through biomechanical gravity filters with multi-stage filters in a compact package

Oase BioSmart Flow-Through Biomechanical Filters Model:BioSmart 5000 The EPDM rubber membrane isOase BioSmart Flow Through Bio Mechanical Filters are multi stage mechanical and biological filtration systems designed for medium ponds with moderate biological load. High surface area filter foams provide exceptional biological filtration capacity for beneficial bacteria to thrive, converting ammonia and nitrites into nitrates, which support plant life. Built in cleaning mechanism allows you to remove or unclog filter foams while keeping your hands