16 x Replacement Filter Sponge Suitable for Oase BioTec 18 + Screenmatic | Set 8 x Blue 8 x Red Koi Pond Replacement Sponges | Replacement Parts Flow Filter Water Clarifier : Amazon.de: Garden
OASE BIOTEC SCREENMATIC 2 - 24000 Pond Filter 3300 GPH 44120 - The Home Depot
Blue Filter Foams for BioTec ScreenMatic² 18000 / 380000 – Atlantic-OASE