Biological and Chemical Filtration: With a built-in filter sponge, this filter is capable of biological and chemical filtration, ideal for keeping your aquarium clean. Disassembly design: The filter sponge can be disassembled effortlessly of the room to be cleaned regularly. Adjustable airflow: the airflow can be easily adjusted at the end of the air intake hose outside of water surfaces . Quick assembly: equipped with 4 suction cups, can be safely installed in the water tank, suitable for freshwater and seawater tanks. Multiple Applications: Can be placed in different types of aquariums to create a superior aquatic environment for fish, ranging from freshwater aquariums, saltwater aquariums, amphibian aquariums, etc. >