By choosing a classic you won’t go wrong. Because you have chosen a reliable, millionfold tried and tested piece of equipment. All models perform to the highest quality standards. First class components and carefully matched features ensure perfect pump and filter performance. Additionally, you have the proverbial EHEIM quiet running, robust durability and low en-ergy consumption. You will be very satisfied. There are 5 models for aquariums from 50 up to 1500 litres –with various equipment.