The acclaimed Classic external filter for aquariums up to 600 litres. A balanced ratio between pump capacity and filter volume ensures the best ratios in the aquarium. With low power consumption, these models are benchmarks in their class. Classic external filters can be constructed with sponges and filter fleece. Eheim recommends the filter construction with Eheim filter medium. There are ready-made filter media for each model for this purpose. The connection between pump head and filter bowl is easy to open thanks to stable clips and a high-quality silicone O-ring. High-quality accessories from the Eheim range allow this filter to meet its high expectations and give your hobby years of pleasure and guarantee.