Sera Siporax Professional Biological Filter Media – High Capacity Aquarium Media 1000ml

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Maximise your aquarium’s biological filtration with Sera Siporax Professional — a premium filter media engineered from sintered glass to provide exceptional surface area and promot e efficient breakdown of ammonia, nitrite and nitrate. Whether you’re running a freshwater planted tank, a marine reef system or a large pond, Siporax is suitable across setups and filter types — internal, external or trickle. Its interconnected pore structure supports beneficial bacteria by ensuring optimal water flow and self-cleaning of the media for long service life. Key Features: Sintered glass construction with advanced pore geometry for maximum bacterial colonisation. Immediate biological activity and long filtration cycles before media replacement. Suitable for fresh, saltwater and pond use, regardless of filter type. Available in multiple volumes to fit systems from ~100 L aquariums up to large ponds of thousands of litres. Ideal choice for hobbyists seeking stable water parameters and low maintenance. Usage Tips: Rinse the media lightly in aquarium water (not tap water) before placement to remove dust. Place in a section of the filter with good water flow for highest efficiency. Combine with good mechanical filtration upstream (e.g., filter wool/sponges) to reduce detritus load. Rarely needs full replacement — clean gently when flow decreases significantly. Show more