Natural Black Lava
- 北尤
- Shijiazhuang, China
- 1 Month
1. Natural volcanic stone, high porosity, hydrophobic and breathable.
2. High hardness, wear resistance, not easy to powder.
3. Easy to wash, less dust.
The volcanic rock biological filter material is corrosion-resistant, inert, and does not participate in the biochemical reactions of the biofilm in the environment. Surface electricity and hydrophilicity: The surface of volcanic rock bio-volcanic rock has a positive charge, which is conducive to the growth of microorganisms. It has strong hydrophilicity, and the amount of attached biofilm is large and fast. In terms of impact on biofilm activity: As a biofilm carrier, volcanic rock biological filter material is harmless and has no inhibitory effect on the fixed microorganisms, and practice has proved that it does not affect the activity of microorganisms.
The volcanic stone we use as rubbing stones and shaving pig hair when killing pigs is black. The structure of quartz glass is obvious. The pores are large and the specific gravity is very light. There are no micropores. The texture is hard and can float on water, not suitable for aquariums. use. Black volcanic stones are mostly used to make massage tools or pave stones for roads and sidewalks. It can also be used for landscaping and laying, and mixing soil for potted green plants.
