OASE Carbon Pre-filter Foam Set of 6 for The BioMaster

The OASE Carbon Pre-filter Foam Set of 6 for the BioMaster 250 350 or 600 includes six carbon replacement filter foams. Carbon filtration transforms unpleasant substances without endangering the aquarium inhabitants. Activated carbon impressively absorbs unwanted substances in aquarium water such as medication residues. The filter foam of activated carbon makes replacement much simpler than common granular forms. Timing to replace the pre-filter foam set varies upon aquarium size number of fish and plants and declines in filter performance.