EHEIM SUBSTRATpro is suitable for fresh and marine water, is washable and can be reused.
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.