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Feature

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)

Description

EHEIM Substrat Pro Biological filter media is specially shaped to create a better water throughflow to provide longer intervals between required maintenance. Its open structure for enhanced water penetration provides better bacterial colonization.