Filter sponge black for sera Fil 250 / Fil 250+UV / Fil 400+UV – 2 pieces (SE-30633)

Replacement black filter sponge set for sera Fil 250, Fil 250+UV and Fil 400+UV internal filters. The two-piece sponge set is designed to fit the filter housings and deliver mechanical filtration by capturing debris, uneaten food and suspended particles. These sponges help maintain water clarity and protect pump and impeller components by preventing coarse particles from entering moving parts.

Advantages

The sponges are cut to match the internal dimensions of compatible sera filters, ensuring correct placement and consistent flow through the filter media. Their open-cell structure provides mechanical retention of solids while allowing water to pass with minimal flow resistance. Using a dedicated replacement sponge set reduces the need for frequent cleaning of the filter body and helps extend the service life of the pump.

Suitable for (tasks / use cases)

• Routine maintenance and media replacement in compatible sera internal filters
• Mechanical removal of debris and particulate matter in freshwater aquaria
• Protecting pump and impeller from clogging by coarse particles
• Interim filtration during biological media cleaning or replacement

Key specifications

• Quantity: 2 sponges per set
• Color: black
• Function: mechanical filtration (open-cell foam)
• Compatibility: designed for specific internal filter models of the stated brand
• Material: durable foam suitable for repeated rinsing

How to use

Turn off and unplug the filter before performing maintenance. Remove the filter housing according to the manufacturer's instructions and extract the old sponge media. Rinse the new sponges in aquarium water to remove any loose particles, then place them into the filter compartment with the correct orientation so that water flows through the sponge before other media. Reassemble the filter, refill if necessary, and restart the unit, checking for proper flow and any air pockets.

Usage recommendations

Inspect the sponges at regular intervals and rinse with dechlorinated aquarium water when visibly clogged. Replace the sponges as part of a maintenance schedule or when they show signs of permanent compression or deterioration. Do not use household detergents or hot water for cleaning, and ensure the filter is fully reassembled and tested after maintenance.