Eheim Professional 3 Thermo

You can count on the Eheim Pro 3 XL external canister filter's high capacity, multi-stage filter to operate both efficiently and silently to help create and maintain a biologically balanced ecosystem 24 hours a day, 365 days a year in your large fresh or saltwater aquariums. Eheim have now added Thermo Filters to this range, allowing you to both filter and heat your aquarium from one single unit.