Oase BioMaster 20 ppi Blue Filter Foam

• For aquarium water that is always clear and healthy
• 100% compatible with animals, plants and microorganisms
• Constant and regular water flow thanks to a fixed pore size

The 20 ppi Replacement Filter Foam for the BioMaster 250, 350, or 600 includes an ultra-coarse replacement filter foam. The combination of coarse and fine filter foams allows you to customize to meet the filtration needs of your aquarium. Timing to replace the filter foam varies upon aquarium size, number of fish and plants, and declines in filter performance.

Significant load capacity with high dimensional stability