EHEIM Lav 1 Liter 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 colonization 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 colonization of bacteria cultures. Reusable (rinse carefully to clean). Suitable for fresh and marine water.
