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OASE BioMaster Replacement Filter Sponges – Prefilter 30ppi (Pack of 4)
The OASE BioMaster 30ppi replacement sponges are designed for the prefilter module of OASE BioMaster external filters, ensuring efficient mechanical and biological filtration. This pack includes 4 high-density (30ppi) sponges, ideal for capturing fine particles and supporting the growth of beneficial nitrifying bacteria.
Compatible with BioMaster 150, 250, 350, and 600, these prefilter sponges allow modular maintenance, letting you clean or replace only the prefilter without disassembling the main unit. The fine-pored structure effectively traps debris and protects the main filter media from clogging, improving overall system performance and longevity.
With a 30 pores-per-inch (ppi) density, they provide an excellent balance between fine particle retention and active biological surface area, making them ideal for freshwater, tropical, and planted tanks. These sponges are washable, reusable, and help maintain water clarity and stability over time.
Key features:
Pack of 4 30ppi prefilter sponges for OASE BioMaster
Compatible with BioMaster 150, 250, 350, 600
Fine filtration and biological support
Easy to replace, washable and reusable
Suitable for freshwater and planted aquariums
Improves filter efficiency and maintenance
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