Active filter carbon with a high performance level especially after treatment with medications.

EHEIM AKTIV is acid washed and activated for automatic water absorption (active surface area 1200 m/g). Thus, it very quickly binds harmful chemical substances like pesticides, medical treatment residues and other substances and retains them. The water in the aquarium will turn crystal clear. Its use is particularly important after treating the livestock with medications. EHEIM AKTIV should only be used for a limited amount of time (ca. 4 weeks) and then removed or replaced. In the filters layering set-up EHEIM AKTIV should be used directly after the mechanical (e.g. EHEIM MECH or MECHpro) and the biological filter media (e.g. EHEIM SUBSTRATpro) in the net bag provided.

Freshness & Storage

Every batch we dispatch carries a minimum of 6 months’ remaining shelf life. Store this product in a cool, dry place away from direct sunlight, with the cap or inner foil closed tightly after each use.

Filter media and substrates carry no manufacturing or expiry date — their working life begins on first contact with water, not on the shelf.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number — or email us, if you would rather — and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.