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The Oase BioMaster Filter Foam 20PPI is designed for aquarium hobbyists using the Oase BioMaster external canister filter range who need reliable, high-performance mechanical and biological filtration. These genuine replacement foams ensure a precise fit to eliminate water bypass, effectively trapping debris while providing a robust surface area for beneficial bacteria. Users should note that these are specifically engineered for the BioMaster series and are not universally compatible with other filter brands.
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No, these are custom-engineered specifically for the Oase BioMaster series and will not provide the necessary seal in other brands or models.
20PPI (pores per inch) is coarser and traps larger debris, while 30PPI is finer and provides a higher surface area for biological filtration.
Replace them when the material becomes brittle, loses its elasticity, or is no longer effectively trapping waste even after a thorough cleaning.
No, always use water taken from your aquarium to prevent chlorine from killing the beneficial bacteria inhabiting the foam.
The 20PPI density is designed to provide excellent mechanical filtration while maintaining high water flow rates, keeping your filter operating efficiently.
The foam may be saturated with debris; remove and rinse the foam in aquarium water to clear the pores.
This is often due to accumulated debris being released; ensure you rinse the foams thoroughly in a separate container of tank water before returning them to the filter.
Check that no debris is trapped between the foam and the filter housing, and verify you are using the correct foam density for the specific BioMaster module tray.
To install, simply slide the foams onto the pre-filter module or internal filter stage of your BioMaster unit, ensuring they are seated flush against the casing walls. When cleaning, avoid using tap water, which contains chlorine that can destroy the beneficial bacteria colonies established in the foam; instead, rinse the pads in a bucket filled with existing aquarium water. Replace the foams when they begin to lose their physical structure or if they no longer return to their original shape after being squeezed during cleaning. These foams are fully compatible with all Oase BioMaster and BioMaster Thermo models.
