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The Oase BioMaster Pre-Filter Foams (45PPI) are essential maintenance components for aquarium hobbyists using the Oase BioMaster external filter range, designed to capture coarse debris and extend the lifespan of your biological filter media. These medium-density sponges serve as the first line of defense, significantly reducing the frequency of full system maintenance; however, they require regular rinsing to prevent flow restriction and maintain peak water quality.
| Brand | Oase |
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PPI stands for Pores Per Inch. 45PPI refers to the density of the foam, which is considered a medium density ideal for trapping particulate matter.
No, these are specifically designed for the geometry of the Oase BioMaster pre-filter module.
While they can be cleaned many times, they should be replaced if the material starts to crumble, lose its elasticity, or no longer traps debris effectively.
The 45PPI is a balanced option for general debris. 60PPI is finer and may clog faster, while 10PPI is much coarser.
No, never wash filter foams in a dishwasher or with detergents, as chemical residues can be toxic to aquarium inhabitants.
The pre-filter foams are likely saturated with debris; remove the pre-filter module and rinse the foams thoroughly.
Foams have reached the end of their service life and should be replaced with a new set of 45PPI filters.
These 45PPI foams are compatible exclusively with the Oase BioMaster and BioMaster Thermo external filter series. To install, simply open the pre-filter top handle on your BioMaster unit, pull out the pre-filter cylinder, and slide the old foams off the central shaft. Replace them with the new 45PPI foams and slide the cylinder back into the filter housing until it clicks. To care for them, avoid using harsh soaps or chemicals when cleaning; simple mechanical rinsing with de-chlorinated water is sufficient to keep them functional.
