Eheim have adopted the many advantages from the professional 3 series – powerful performance, optimal energy efficiency, quiet operation, priming aid, safety hose adapter – and they have also improved the technology by incorporating the new ‘Xtender’ valve. In the event the output is reduced due to the fine filter media blocking, the valve can be adjusted to redirect the flow. The biological filtration is maintained and the service interval can be extended by a few days. There are 3 sizes available for aquariums up to 250, 350 and 600 litres. The 350 model is also available with an integrated heater as thermofilter. Eheim Professionel 4 350 for aquariums 180-350L.
