sera 08480 aquarium filter accessory

sera 08480 aquarium filter accessory is a biofiltration media pack designed for pond and aquarium filters. Each pack contains one unit of sera siporax pond media and a coarse prefilter of sera biofibres to retain large particles before they reach the biological filter. The porous tunnel structure of the siporax material provides extensive surface area for beneficial bacteria, enabling efficient removal of nitrate and stable biological filtration in freshwater systems.

Advantages

sera siporax pond offers a very large open-pored structure that supports both aerobic and anaerobic bacterial colonies, improving nitrification and denitrification processes within the filter. One liter of this media provides biological surface area comparable to approximately 34 liters of traditional clay filter material, allowing compact, high-performance filtration. The included prefilter fibres reduce clogging of the biofilter and extend maintenance intervals.

Suitable for

• External and internal pond filters requiring high biological capacity
• Aquarium biofilters where compact, high-surface-area media is needed
• Systems aiming to reduce nitrate levels through combined aerobic and anaerobic bacterial activity
• Filter setups that benefit from a prefilter to trap large particles

Key specifications

• Quantity per pack: 1 piece
• Media type: open-pored tunnel-structured biofilter media
• Prefilter: coarse biofiber pad for particle retention
• Effective surface area: one litre equivalent to roughly 34 litres of clay media
• Intended use: freshwater pond and aquarium biological filtration

How to use

Rinse the sera siporax pond media briefly with pond or dechlorinated water before installation to remove loose dust. Place the media into the biological chamber of the filter according to the filter manufacturer's guidance, ensuring water flows through the siporax tunnels for maximum contact with beneficial bacteria. Position the coarse sera biofibres upstream of the siporax to capture larger debris and reduce direct clogging of the biofilter media. Follow regular maintenance intervals for the prefilter pad, replacing or rinsing it when visibly soiled while avoiding excessive cleaning of the siporax to preserve bacterial colonies.

Usage recommendations

Use this media in established biological systems where beneficial bacteria are already present or allow time for colonization after installation. Maintain routine mechanical prefiltration and avoid complete sterilization of the biofilter to retain biological activity that reduces nitrate levels effectively.