OASE BioMaster Pre-filter Foam Set Orange, 1ea/6 pk

The Pre-filter Foam Set 45 ppi, designed for the BioMaster 250, 350, or 600, comes with six high-quality fine filter foams. This set offers a mix of coarse and fine foams, enabling you to tailor the filtration to suit your aquarium's specific requirements. The replacement schedule for the pre-filter foam set depends on factors like tank size, the number of fish and plants, and any noticeable drop in filter efficiency.