The Eheim Air Pump supplys an extremely quiet air supply to your aquarium and is available in 3 sizes 100l/h 200l/h and 400l/h. All 3 models are supplied fully equipped with Air hose and Eheim adjustable diffusor which can be easily adjusted to your taste and the requirements of your aquarium. – Continuous ultra-quiet operation. – Air flow level adjustable on pump. – Air flow level and apperance adjustable on Eheim diffusor. – Complete with 1 air diffusor and 1m Airline. – One airline connection. – Hook for wall fastening or can be safely mounted on the vibration resisting rubber edges in a traditional manner – 50-100l/h. – Suitable for freshwater Marine aquariums. – 3 year manufactuerers guarantee.