159-gal; Put cleanliness first and protect your tank with the Classic 600 External Aquarium Canister Filter from Eheim. With this exceptional filtration system, you'll get both mechanical and biological purification, constant water circulation and oxygen enrichment in one compact ...159-gal; Put cleanliness first and protect your tank with the Classic 600 External Aquarium Canister Filter from Eheim. With this exceptional filtration system, you'll get both mechanical and biological purification, constant water circulation and oxygen enrichment in one compact system.
It's even been tried and tested to ensure optimum efficiency! Already equipped with everything you need to get started—including detailed instructions—the Eheim Classic is one filter that gets the job done.