OASE 4 piece Pre-filter Foam Set (60ppi)
- The Pre-filter Foam Set 60 ppi for the BioMaster 250, 350, or 600 includes 4 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