Nano Filtermodule - Filter Media Basket for Nano Corner Filter and Corner Filter XL
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Pro Shrimp's comment: This replaces the standard fleece filter element with a basket, that can be filled with a medium of your choice (bio, carbon, ceramic, or any other medium). When you replace one of the two elements of the Nano Corner XL filter you increase potential filtration greatly. Effectivly ending up with a four stage filtration (several fleece, sponge and medium filter stages).
For an even higher filter capacity, can be used as an alternative to the filter element with 3 layers of fleece. Especially recommended where fish are present. In the corner filter XL you get multi stage filtration by switching to just one filter element.
Simply fill, rinse (due to possible residue caused by abrasion in transport) and insert in the place of the filter element.
For filling with Nano filter medium (Biofilter Granules/Algae Stop/Active Carbon).