Mechanical-biological filter medium for combined water treatment bioMECH has been cleverly designed: dirt-trapping pockets capture and retain large and small dirt particles. At the same time the subtly designed pore structure provides colonization for the purification bacteria and thus ensures reliable biological decomposition. The material is pH-neutral and does not contain water hardeners. EHEIM bioMECH is suitable for fresh and marine water, is washable and reusable many times.

Specifications

• EHEIM order no.: 2508051
• Pack: 1 litre, which EHEIM also list by weight as 680 g
• Type: mechanical-biological filter medium for combined water treatment
• Chemistry: pH-neutral, and contains no water hardeners
• Water: EHEIM list bioMECH as a freshwater medium
• Reusable: yes — washable and reusable many times over

Setup & Use

bioMECH does two jobs in one layer. The dirt-trapping pockets in the moulding catch large and small particles mechanically, while the pore structure gives the purification bacteria somewhere to live. That makes it the medium to use when a filter has too little space to give mechanical and biological media a basket each.

Rinse it before first use.

Cleaning. Rinse the medium in water taken out of the tank, never under the tap and never with detergent — chlorine and soap kill the bacteria you are trying to keep. EHEIM’s standing instruction for every biological medium is the same: never clean or change all the filter media in one operation. Do one layer at a time, a few weeks apart, so the untouched layers carry the tank while the cleaned one recolonises.

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.