Specially designed for seamless compatibility with filtrations systems, this sponge filter insert features a precisions cut structure for secure, leakproof installation and maintenance for freshwater and marine aquarium environments, it efficiently processes waterborne contaminants during regular filter canister operations to maintain balanced habitats Crafted from materials resistant to compression fatigue, this long lasting filter media maintains optimal flows rates while promoting sustainable aquarium care practices Perfect for aquarium enthusiasts and professional fishkeepers seeking filter, this foam cartridge simplifies routine tanks upkeep while safeguarding delicate life Engineered with foam, the filter canister foam delivers superior mechanical filtrations to impurities and debris, ensuring clear water for a thriving ecosystem