1. Dual Filtration System This aquarium sponge filter features a dualfiltration mechanism that combines mechanical and biological filtration to keep your aquarium water clean and clear. The aquarium filter sponge traps dirt, uneaten food, and waste particles, while the included filtered ceramic balls provide a large surface area for beneficial bacteria to grow. 2. Natural Ecosystem This aquarium sponge filter promotes a balanced and thriving aquatic environment. The porous sponge material of the small fish tank filter offers an ideal breeding ground for beneficial bacteria, which play a crucial role in maintaining water quality. This not only benefits the overall health of your aquatic pets but also supports the growth and development of fish and shrimp. 3. UserFriendly Design The submersible internal foam aquarium filter sponges are incredibly easy to install and use. Simply place them in your aquarium, connect them to an air pump, and watch them start working. To clean, just remove the sponge, rinse it in old tank water, and reinsert it. The included filter sponge ensures you always have a clean one on hand, making maintenance effortless. 4. Versatile Aquatic Setups This aquarium filter sponge is suitable for a wide range of setups, from small betta tanks to large breeding tanks. It can also be used in turtle tank filters, providing clean and oxygenrich water. Its compatibility with various tank sizes and types makes it a versatile choice for all aquarium enthusiasts, offering a safe and healthy environment for aquatic life to thrive.