The elite class of external filters EHEIM professionel 3 – the external filter family for the most demanding requirements. High-end technology in top quality with all conveniences and with top class relatives. Whether you choose the “smaller” or the large XL-filter – you won’t find a better filter anywhere. EHEIM professionel 3 stands for high quality, high performance, exemplary energy efficiency, wonderfully quiet running and full conveniences, Automatic self-priming, large prefilter and safety hose adapter are just some of the benefits. There are 4 models to choose from for aquariums up to 250, 350 und 600 litres as well as the large XL filter up to 1200 litres. * The models 250, 350 and 1200XL are also available as a thermofilter (T).