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Oase BioMaster External Filter Foams


Oase BioMaster External Filter Foams

Replacement foams for the Oase BioMaster External filters - orange 30ppi filter and blue 20ppi filter fit all BioMaster filters from 250 to 850 models. Prefilter foams sets also available - set of 4 for the BioMaster 250 and 350 and a set of 6 for the BioMaster 600 and 850.


  • Significant load capacity with high dimensional stability
  • Constant and regular water flow thanks to a fixed pore size
  • Genuine Oase Filter Foam Spare
  • Fits the BioMaster Aquarium filters.
  • Choose your filter from the drop down menu
  • Easy to replace
  • Keep your system healthy by regularly changing media

Key Features:

  • For aquarium and pond water that is always clear and healthy
  • 100% compatible with animals, plants and microorganisms
  • Provides both mechanical and biological filtration

This is a selection of different filter spares to fit the Oase BioMaster external aquarium filters. Just use the drop down menu and select the Oase BioMaster model you have. We recommend that only Oase foam spares are used on Oase filters as cheaper alternatives may not have the right density and could compromise the efficacy of your Oase filter by clogging too fast or not catching enough debris.

If you have any questions about this product and whether it's the right product for your pond or just need a little bit of guidance, please contact us and a member of our friendly Tropical Team will be very happy to answer all of your questions.

Additional information


Blue – 20ppi, Orange – 30ppi, PreFilter – Set of 4, PreFilter – Set of 6