OASE Pre-filter Foam Set of 6 for the BioMaster

• The Pre-filter Foam Set 60 ppi for the BioMaster 250, 350, 600, or 850 and BioMaster Thermo 250, 350, 600, 850.  This includes 6 ultra fine replacement filter foams
• Customize your choice of filter foams to meet the needs of your aquarium
• Timing to replace the pre-filter foam set varies upon aquarium size and the number of fish and plants

Part 49583 - These are the foam filters that are included with a new unit