Optimized bio-filter medium with perfect volume usage, long intervals between cleaning, and top decomposition performance.
SUBSTRATpro consists of pearl-shaped sintered glass. The spherical shape provides high bulk density, ensuring the entire volume in the filter (filter baskets or modules) can be utilized. Furthermore, the optimum surface area of the beads allows for intensive colonization of essential purification bacteria.
Due to the high number of bacteria, peak nitrite loads are more easily reduced and maintenance intervals for the filter material are lengthened.
EHEIM SUBSTRATpro is suitable for freshwater and marine aquariums, is washable, and can be reused.
- Optimized bio-filter medium made from sintered glass
- High bulk density due to spherical shape (beads)
- Very dense colonization of bacteria
- Longer intervals between cleaning
- Better reduction of nitrite loads
- Reusable (rinse carefully to clean)
- Suitable for freshwater and marine water
Tip:
Never clean or replace all filter media at once (and never clean too rigorously). Bacterial cultures must not be completely destroyed, otherwise re-colonization will be retarded. The filter baskets in external filters and filter modules in internal filters, such as aquaball and biopower, are ideal for partial cleaning.

Eheim SUBSTRATpro 1L
Optimized bio-filter medium with perfect volume usage, long intervals between cleaning, and top decomposition performance.
SUBSTRATpro consists of pearl-shaped sintered glass. The spherical shape provides high bulk density, ensuring the entire volume in the filter (filter baskets or modules) can be utilized. Furthermore, the optimum surface area of the beads allows for intensive colonization of essential purification bacteria.
Due to the high number of bacteria, peak nitrite loads are more easily reduced and maintenance intervals for the filter material are lengthened.
EHEIM SUBSTRATpro is suitable for freshwater and marine aquariums, is washable, and can be reused.
- Optimized bio-filter medium made from sintered glass
- High bulk density due to spherical shape (beads)
- Very dense colonization of bacteria
- Longer intervals between cleaning
- Better reduction of nitrite loads
- Reusable (rinse carefully to clean)
- Suitable for freshwater and marine water
Tip:
Never clean or replace all filter media at once (and never clean too rigorously). Bacterial cultures must not be completely destroyed, otherwise re-colonization will be retarded. The filter baskets in external filters and filter modules in internal filters, such as aquaball and biopower, are ideal for partial cleaning.

- Brand: Eheim
- UPC: 720686250697
- Availability: 3
