Aquarium Bio Media, Ceramic Rings, Blocks & Spheres

Browse aquarium biological filter media at The Tech Den Australia, including ceramic rings, porous media, bio blocks, spheres and moving-bed media. Compare options for aquarium and pond filtration, with product-specific applications for canister filters, sumps and moving-bed systems.

Explore biological filter media

Porous media and ceramic rings: Explore Seachem Matrix and Pond Matrix, Eheim Substrat and SUBSTRATpro, Serenity ceramic rings, Mr Aqua rings and Continuum Aquatics Bact-Rox in different sizes and pack volumes.
Bio blocks and spheres: Compare Maxspect Nano-Tech, Mantis and Dymax media, checking dimensions and recommended placement against your filter compartments.
Moving-bed media: Browse Evolution Aqua K1 and K-Plus, alongside OASE Hel-X 13. Check the media requirements of your particular pond filter or biological reactor.
Specialist biological products: The range also includes Seachem de*nitrate, Maxspect Anaerobic-Blocks and catalyst refills, Aquaforest Life Bio Fil and Evolution Aqua PURE bacteria products. Follow each product's flow, placement and setup instructions.

Choose media for its function

Biological media provides surfaces for bacteria to colonise. Select it according to your filtration system, available space, water flow and livestock load. New media is not a guarantee that an aquarium is cycled; monitor water parameters during setup and changes to filtration.

This collection also contains activated carbon, Seachem Purigen, PhosGuard and CupriSorb, Boyd Chemi-Pure products, Dymax Clear-Mix and media bags. These have different filtration functions and should not be treated as interchangeable with biological media. Match bag mesh and capacity to the material being used, and follow the individual product's preparation and maintenance directions.

Check applications and purchasing details

Confirm freshwater, marine or pond suitability on each listing rather than assuming every product suits every system. Aquaforest KalkMedia is calcium reactor media, while filter floss holders and bacteria balls serve different purposes from ceramic bio media.

Compare pack sizes and packaging details, including OEM listings supplied without retail packaging. Selected large packs attract additional delivery charges. Seachem de*nitrate 20 litres is a special-order item; contact the store to confirm availability and estimated arrival before ordering.