The ZB-300F is an air-driven aquarium filter that ensures clean, but above all healthy water in your aquariums. The filter has been used in professional nurseries for years and is also known as the 'Moving bed filter'. This name indicates that the filter media continuously move past each other, which ensures an even better filter effect. The ZB-300F filter ensures a natural processing of waste in the water, whereby substances such as ammonia, nitrate and nitrite are converted in a biological way. The large volumes of air that are pumped into the filter ensure degassing of these waste products.