Replacement Pre-Filter foam for BioMaster and BioMaster2 Canister.

The Pre-filter Foam Set for the BioMaster and BioMaster V2 250, 350, 600, 850 and BioMaster Thermo 250, 350, 600, 850 comes in a set of coarse 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.

Available in Set of 6

• Carbon PreFilter Foam
• Coarse - 30ppi
• Normal - 45ppi
• Fine - 60ppi