EHEIM Substrat Pro Biological Filter Media (Sintered Pearl-Shaped Glass) 1L
- Made of highly porous artifiical sintered glass material.
- Unbeatable surface area structure of 1800 sq ft per gallon.
- Can be reused by lightly rinsing with aquarium water every 1 to 3 months and replaced every 3 to 6 months.
- Provides longer intervals between required maintenance.
- For use in all EHEIM filters (Classic, Ecco, Pro 3, Pro 3e).