• The Filter Foam BioPlus 20 ppi for the BioPlus 50, 100, or 200 includes a fine replacement filter foam
• Customize your choice of filter foams and fleeces to meet the needs of your aquarium
• Timing to replace the filter foam varies upon aquarium size and the number of fish and plants

The Filter Foam BioPlus Set 30 ppi for the BioPlus 50, 100, or 200 includes a fine replacement filter foam. The combination of coarse and fine filter foams and fleeces 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.