Description: Easy-to-use internal sponge filter for aquarium fish tank with hree purifier system : filter cotton, quartz sand, activated carbon; High-qualified material made, no-toxic, safe to use for shrimps and fishes; It is a best water purfier for hydroponic system, clears the air, purify the living environment for fishes, enlarge supplying the water much needed oxygen. It works without noises, provides you a quiet environment; Soak into the aquarium water for 5 minutes before use, which will make it easy for nitrifying bacteria to form colonies; Use aquarium water to clean the sponge rather than the hot water; Specification: Material: Plastic + Cotton + Stone Size(D x H): Approx. 50x85mm/ 1.97x3.35inch Package Includes: 1 Piece Water Filter Note: Due to the manual measurement and lighting effects, there is a slight difference between the size and color from the above and the actual item
