- Efficient Filtration: The Aquarium Sponge Filter provides quiet and effective filtration, ensuring a clean and healthy environment for your fish without disrupting their oxygen supply. It supports biological filtration and water treatment. - Space-Saving Design: With its round and ultra-thin profile, this compact filter is designed to save space in your tank. It is compatible with air pumps rated over 1W (air pump and air tube not included). Choose an appropriate air pump based on your tank size. - Durable Construction: Made from high-strength ABS material, this Bio Sponge Filter is robust, environmentally friendly, and non-toxic. It is built to last, providing reliable performance for your aquarium. - Easy Maintenance: The filter sponge is easily removable for cleaning or replacement. Regular maintenance helps maintain water quality and creates a healthy living environment for your aquatic pets. - Versatile Use: Ideal for small aquariums, this internal filter is suitable for tanks ranging from 2 to 6 gallons. It can be used in various settings, including fry tanks, shrimp and betta tanks, as well as both freshwater and saltwater environments. This aquarium sponge filter is a practical solution for maintaining a clean and healthy habitat for your fish, ensuring they thrive in a safe and optimal environment.