4 x Replacement Foam Filters for 300l/h AP-600L Aquarium Internal Filter
Hidom Filtro Interno Ricambio Gommapiuma Spugne per Acquario Ap Gamma Tutti Modi. Hidom Tauchpumpe Aquarium Interne Pumpe Und Filter für Aquarium 100L - 350L. It is important to replace the foam filters regularly for optimal filter performance.