EHEIM - EHEIM PROFESSIONEL 3 FILTERThis external canister filter with a pump output of 1700 l per hour offers previously unknown convenience for aquarium sizes up to 1200 l. Operating large aquariums has never been so easy. The ergometric priming lever fills the 25 l filter canister with just a few movements. The filter system is filled with this convenient priming support at the push of a button and immediately the system starts working. Complicated priming principles for which every aquarium owner developed his own more or less inconvenient and often also wet technology are now a thing of the past. The water is sucked in through 2 priming hoses. This is new and means 2 priming hoses with 2 prime strainers ensure perfect water replacement in ALL zones in large aquariums. The water is returned into the aquarium through 1 pressure line. Thus EHEIM professionel 3 is the first external canister filter with a triple adapter.