EHEIM LAV filter media for external filters

Biological filter media have been specially developed to create the best conditions for the colonization of bacterial cultures. A bacterial lawn can form after just a short time. These bacteria feed on various small dirt particles and also metabolize critical substances in the aquarium water. After the initial rough cleaning with mechanical filter media, biological filtration is extremely important.
Only this final biological filtration ensures clear, healthy water and consistent water values.
EHEIM LAV. Eheim LAV offers biological filtration using natural lava rock. The rough, highly porous structure of the lava rock provides the best conditions for the colonization of cleaning bacteria. Mechanical filter media retain more or less coarse dirt particles. Biological filter media, on the other hand, primarily ensure that bacterial cultures can colonize. Only this cleaning process ensures clear, clean aquarium water.
As Eheim LAV is a natural material, the size of the granules and fragments varies. EHEIM LAV is lime-free and therefore water-neutral.
Eheim LAV can be rinsed out and reused. It is suitable for both fresh and salt water.
Never clean or replace the entire biological filter material at once, but in stages. Otherwise the important bacterial cultures would be completely destroyed and recolonization would be extremely delayed. The filter baskets in external filters and, for example, the aquaball and biopower filter modules in internal filters are ideal for partial cleaning.