Eheim Lav consists of actual volcanic rock & is a natural product. Its rough, highly porous surface structure provides the much-needed purification bacteria with very good colonization conditions. Because it is a natural product, the granulated & small pieces in the packs are of different sizes.

Highlights

Suitable for freshwater & saltwater.

Biological filtration.

Natural volcanic rock.

Highly porous structure.

Great for the colonization of good bacteria.

Easy to clean.

Long life span.