Replacement Filter Sponges 3M EB-0805, set of 2 for aquarium filtration

Set of two replacement filter sponges designed for aquarium filtration, compatible with systems that accept EB-0805-sized sponges. These sponges work as mechanical and basic biological media, trapping suspended particles and providing surface area for colonization by beneficial nitrifying bacteria. Sold as a pair to simplify routine maintenance and ensure continuous filtration performance when one sponge is being cleaned or replaced.

Advantages

The replacement sponges are made from open-cell foam that captures debris while allowing water flow, helping to maintain water clarity and reduce filter clogging. Their porous structure supports establishment of beneficial bacteria for biological filtration. Being sold in a set of two allows staggered maintenance and reduces downtime for the filter system. The sponges are lightweight, cuttable to fit compatible filter chambers, and withstand repeated rinsing during regular maintenance.

Suitable for

• Home freshwater aquariums with compatible filter cartridges or sponge chambers
• Routine filter maintenance and scheduled sponge replacement
• Temporary use as mechanical and initial biological filtration media

Key specifications

• Material: open-cell polyurethane foam suitable for mechanical and biological filtration
• Pack contents: two identical replacement sponges
• Function: traps suspended particles and provides surface area for beneficial bacteria
• Maintenance: reusable after gentle rinsing in aquarium water; replace as needed

How to use

Turn off the filter and remove the old sponge following the filter manufacturer's instructions. Rinse the replacement sponge briefly in aquarium water to remove loose dust, then insert it into the sponge chamber or cartridge slot in the correct orientation. Restart the filter and monitor water flow to confirm proper installation. For initial use, allow several days for biological colonization before relying solely on the sponge for biological filtration.

Usage recommendations

Rinse sponges gently in dechlorinated aquarium water when performing maintenance to preserve beneficial bacteria. Replace sponges when heavily compressed, torn, or after prolonged loss of flow; keep a spare on hand to avoid interruption of filtration during cleaning.