ZooMed Nano 30 External Canister Filter Water filter for nano tanks and aquariums up to 30 gallons Created for use in both freshwater and saltwater aquariums Designed to be easy for new users to prime, customize, and even open This filter was also built to be convenient with a compact, space saving design and quiet, anti vibration brushings Package includes the Nano 30 external canister filter, removable hose connecting device, spray bar system for greater aeration, mechanical filter sponge, bio ceramic filtration media, and carbon chemical filtration media