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polishing the water and offering more surface for beneficial bacteria as the pre-filter stage that protects your main media from clogging
and daphnia that adds welcome variety for fish feeding mainly at the surface
The flat base provides stability — no need for additional cushioning or adhesive for most placements
AquaVista Aquatics Deluxe Brine Shrimp Hatchery
Bulk Pack — 4
Oase BioMaster Pre Filter Foam Set of 6 Blue Buy6Get2 polishing the water and offeringOase BioMaster Pre Filter Foam Set of 6 (Blue) A set of 6 blue replacement pre filter foams for the Oase BioMaster canister filter. The blue foams are a finer pore density, polishing the water and offering more surface for beneficial bacteria as the pre filter stage that protects your main media from clogging. Pull and rinse the BioMaster pre filter module without opening the canister; replace a foam when it's too worn to clean. PPI means "pores per
