Pre-filter Foam Set of 4 for the BioMaster 10 ppi

• 10 ppi ultra-coarse Pre-filter foams effectively remove debris prior to water entering the main body of the filter, reducing filter maintenance 
• Optimize your BioMaster filtration by using these pre-filter foams based on your aquarium’s needs. 
• Timing to replace the pre-filter foam set varies upon aquarium size, number of fish and plants, and declines in filter performance. We recommend replacing the foams incrementally. 
• The 10 ppi foams are pre-filter foams for all BioMaster models 

Four blue 10 ppi pre-filter foams