Ideal for both freshwater and saltwater tanks, this filter sock is perfect for hobbyists and professionals alike. It helps reduce the load on your primary filtration system, extending its lifespan and improving overall efficiency. The cloth material is resistant to wear and tear, ensuring long-lasting performance. Features - Color: White -Material:Plastic,cloth - Size: 25.00X10.00X10.00cm/9.82X3.93X3.93in -Crystal clear water: achieve water clarity with these highefficiency filter socks, enhancing the beauty of your aquarium -Robust and washable: made from strong cloth, these filter socks are designed for durability and can be easily washed for repeated use -Fine particle filtration: the bottom filter design effectively traps fine debris, reducing the need for frequent water changes and maintenance -Adaptable to various tanks: these filter socks are suitable for a wide range of aquarium types, providing flexibility in different fishkeeping environments -Easy to install: simple to set up, these filter socks improve your tank's capabilities, making aquarium maintenance a breeze Package list: 4 tank filter bags