- Optimised bio-filter medium made from sintered glass
- High bulk density due to spherical shape (beads)
- Very dense colonisation of bacteria
- Longer intervals between cleaning
- Better reduction of nitrite loads
- Reusable (rinse carefully to clean)
- Suitable for fresh and marine water
Never clean or change all the filter media together in one operation (and never clean too rigorously). The bacteria cultures must not be completely destroyed, otherwise re-colonisation will be retarded. The filter baskets in the external filters and filter modules in the internal filters aquaball and biopower are ideal for partial cleaning.