- Patented oblique section structure.
- Porous structure to build a healthy beneficial bacteria system.
- High absorption rate.
- Open and closed pores to balance Aerobic and Anaerobic bacteria.
- Fast water absorption certifies super porous structure, not easy to clog.
- Compliant with EU RoHS tests.
- Large surface area 1150m²/L (46, 914 sq ft/ US gal).