Eheim Substrat Pro250ml
Keep your fish tank water healthy and attractive looking with the Eheim Fish Substrat Pro. This optimised bio-filter medium offers long intervals between cleaning and top decomposition performance. Eheim Fish Substrat Pro consists of pearl-shaped sintered glass to give a high bulk density, allowing the whole of the volume in the filter (filter baskets or modules) to be utilised. The optimum surface of the beads also provides intensive colonisation of the important purification bacteria.