Fluval Mechanical sponge for filtration with activated carbon for filter C3

• Works in mechanical filtration and catches the large and small particles
• Inlaid Foamex highly porous
• For mechanical filtration, removes particles and waste in the aquarium

Product Description This sponge acts on mechanical filtration and catches large and small particles. This highly porous foamex pad provides a large surface area for mechanical filtration removes particles and waste in the aquarium, creating a clean environment. Directions Replace every 4-6 weeks