Ideal for both freshwater and marine aquariums, this filter sponge replacement is easy to install and maintain. Its reusable design allows for thorough cleaning, ensuring long-term use. The sponge efficiently captures impurities while allowing water flow, helping to reduce maintenance efforts and keep your tank pristine. Features -Color:Blue -Material:Sponge -Size:7.00X6.30X5.50cm/2.75X2.48X2.16in - filtration power: keeps your aquarium and clear, enhancing the overall aesthetic -Reliable contaminant removal: effectively traps dirt and debris, safeguarding the health of your aquatic pets -Resilient construction: made from durable sponge material that withstands prolonged use without losing shape -Quick and easy setup: designed for effortless installation across multiple aquarium filter systems -Optimized structure: supports the development of beneficial microorganisms for ecological balance Package list: 4 x aquarium filter sponge