Replacement Fine Foam Filter Sponge for Oase Biotec 5.1/10.1(Pack of 1)Size: 250mm x 200mm x 80mm Custom designed and manufactured for Oase Biotec 5. 1 10. 1 Filtration Systems Enhances biological filtration Good for freshwater & marine environments These flat foams that have a slit in them

Foam size:90mm x 70mm x 16mm

Package Include: 50PCS ( Pieces)

12 x White Filter Floss

12 x fine pads

12 x Fine Filters

Custom designed and manufactured for the Eheim Classic 2217 / 600 filtration systems

Custom designed and manufactured for Eheim Aqua Compact 40 / 62

Custom designed and manufactured for Fluval Spec Aquariums

Custom designed and manufactured for the Hidom AP-600L Internal Filter

Custom designed and manufactured for Oase Biotec 12 56739

50 x Poly filter

White Medium Foam x 6