Juwel Replacement Lid for Bioflow 3.0 Filters: Amazon.co.uk: Pet Supplies
Lasama Filterschwamm für Juwel M/Compact/Bioflow 3.0 10 x 10 x 5 cm fein 30 ppi: Amazon.de: Haustier
Set of Compatible Aquarium Filter Sponge for Juwel Compact / Bioflow 3.0 (6 x Fine, 6 x Coarse, 6 x Nitrate, 6 x Carbon)|aquarium filter sponge|set ofaquarium filter - AliExpress