VILLNO 4PCS Aquarium Filter Sponge Replacement for 8W 400LPH Aquarium Filter, Aquarium Biochemical Sponges for Replacement

• 4 PCS of Biochemical Sponge for Replacement: The filter sponges can be washed and reused. We suggest you to wash the filter sponge every 1-2weeks and change the sponge filter at least every 4-6 months.
• Physical Filtration: This sponge cotton can filter impurities and decompose harmful substance in water, providing your fish with a good aquatic environment.
• Easy Installation: Size: 4.5*4*11.5cm, easy to replace the filter media, just open the filter box and replace the filter sponge.
• Easy to Clean: Wash the filter sponge with water in fish tank only every 1-2 weeks depending on the actual situation of your aquarium.
• Wide Application: Suitable for both fresh water and saltwater, can be used with small fishes and shrimps.

Product description VILLNO 8W 12W Aquarium Filter, Internal Fish Tank Filter, Submersible Filter for Fresh Water and Saltwater Directions fully submerge in water when use