This pre-filter sponge is tailored for aquarium filters, providing a practical solution to maintain optimal water quality. Its soft yet sturdy foam design fits seamlessly into filter systems, preventing clogging and extending filter lifespan. suitable for freshwater or saltwater tanks, it helps create a balanced ecosystem for aquatic creatures. Features -Color:Yellow -Material:Sponge -Size:5.50X5.00X5.00cm/2.16X1.97X1.97in -Filtration efficiency: optimized to trap debris and particles, ensuring your fish tank remains clean and healthy -Quick and simple replacement: userfriendly design allows for swift and easy replacement, saving time and effort during maintenance routines -Versatile application: compatible with a wide range of aquarium filter systems, making it suitable for tanks of various sizes and brands -Enhanced physical filtration: the yellow sponge material effectively absorbs debris, creating a pristine and safe environment for fishes -Longterm use: designed for longterm use, minimizing replacement frequency and providing a ideal solution for fish tank care Package list: 50 x Aquarium Sponge Filter