Eheim substrat pro 5L

EHEIM Substrat pro: Biological filter media for optimal biological decomposition.

After mechanical water treatment by EHEIM Mech, Substrat pro offers important cleaning bacteria the best colonization conditions thanks to its high-density spherical shape (full volume utilization) and ideal surface structure (maximum number of bacteria on each sphere). This combination results in the maximum number of cleaning bacteria, ensuring clear, healthy water and stable water conditions that allow for longer filter use. Substrat pro reduces nitrite pollution spikes, is washable, and reusable.