The EHEIM professionel 4+ | technology, aquarium, air filter | The EHEIM professionel 4+ EHEIMs best external filter but now with an integrated 'emergency' button. They have adopted the many advantages of
![The first external filter with the technology to extend intervals between cleaning | EHEIM GmbH & Co. KG. Leading aquarium manufacturer. The first external filter with the technology to extend intervals between cleaning | EHEIM GmbH & Co. KG. Leading aquarium manufacturer.](https://eheim.com/media/image/8c/44/c7/170111020125.jpg)
The first external filter with the technology to extend intervals between cleaning | EHEIM GmbH & Co. KG. Leading aquarium manufacturer.
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