OASE BioPlus 30ppi Fine Filter Foam Set

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 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.