... large specific surface area, easy biofilm formation and not falling, good hydrophilicity, high biological activity, good treatment ... effect and so on. 2. Using scopeThe Biocell ... to municipal wastewater treatment, industrial wastewater treatment, pond, fish farming and aquarium.3. SpecificationΦ10X7mm, Φ10X10mm, Φ12X10mm, Φ12X12mm, Φ ...