• Biological filter media

    The main task of biological filter media is to offer the best colonisation conditions for the bacteria cultures, so that after a short time a bacteria lawn develops. The bacteria feed on dirt particles of all kind and convert substances critical for the aquarium. After the first cleaning process by the mechanical filter media (e.g. EHEIM MECH or MECHpro) the biological filtration is the most important. It provides for clear, healthy water and stabile water values. That’s why we have invested a lot of research work into the development of biological filter media.

  • EHEIM LAV 5L
  • EHEIM LAV 5L

EHEIM LAV

Natural volcanic rock for biological filtration


EHEIM LAV consists of volcanic rock and is a natural product. Its rough, highly porous surface structure provides the purification bacteria with very good colonisation conditions. Because it is a natural product the granulate and small pieces in the packs are of different sizes.
EHEIM LAV can be washed and reused. It is suitable for fresh and marine water.

  • Bio-filter medium from natural volcanic rock
  • Highly porous structure
  • Very good conditions for colonisation of bacteria cultures
  • Reusable (rinse carefully to clean)
  • Suitable for fresh and marine water
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