Eheim Aquarium Filters

Below you can find all models Eheim Aquarium Filters for which we have manuals available. Also view the frequenty asked questions at the bottom of the page for useful tips about your product. Is your model not on the list? Please contact us.

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Frequently Asked Questions

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

I have an aquarium filter with active char. How often should I replace this? Verified
Active char loses its function after about two weeks and should be replaced to keep filtering the water adequately.

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I have an aquarium filter with sponges. How often should I replace these? Verified
Sponges need to be replaced several times a year. After time sponges wear down and can't filter the water optimally.

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What is the difference between an internal and external filter? Verified
Internal filters are placed inside the aquarium and are generally used for smaller aquariums. External filters are placed outside the aquarium and are used for larger aquariums. External filters often have a large capacity and can go without maintenance for a long time.

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