The OASE pre-filter foam set for BioMaster filters ensures efficient mechanical cleaning of aquarium or pond water. The four foam units with 30ppi pore density reliably trap dirt particles and protect the downstream filter media.
Four pre-filter foam units in the set guarantee a consistently high filtration efficiency and reduce maintenance intervals.
The 30ppi pore density provides effective mechanical filtration – coarse particles are captured right at the filter inlet.
Easy replacement of the foams extends the life of the entire filter system and maintains water quality.
The orange colour facilitates visual control of the degree of soiling – timely replacement becomes immediately visible.
Perfect fit for OASE BioMaster filters – optimal sealing and easy installation without tools.
What sets the pre-filter foam set apart
The pre-filter foams are specially tailored to the OASE BioMaster filter range. Their open-cell material (30ppi) combines high dirt absorption with low flow resistance. The set contains four units – enough for several replacement cycles – offering an economical solution for regular filter maintenance.
Ideal for...
Owners of OASE BioMaster external filters seeking reliable mechanical pre-separation. Whether in freshwater aquariums, garden ponds or koi ponds, the pre-filter foams reduce the load on biological filter stages and ensure clear water without chemical additives.
How to use the pre-filter foam set
The foams are inserted into the filter housing onto the existing pre-filter support. Rinse them briefly under running water before insertion. Replace the pre-filters every 4–6 weeks or when visibly dirty. The set is not reusable – use only original OASE replacement parts.
OASE is a German manufacturer of water technology for garden ponds, aquariums and fountains. The company has stood for high-quality pumps, filters and pond care products for decades. The brand is particularly known among ambitious pond and aquarium owners for its durable and efficient filter systems.
It is a set of four pre-filter foam units with 30ppi pore density. The foams are used in the OASE BioMaster external filter as the first mechanical filtration stage and trap coarse dirt particles.
The set is suitable for all OASE BioMaster external filters (e.g. BioMaster 250, 350, 600, 850). It can be used in both aquarium and garden pond filters.
Replacement should occur every 4 to 6 weeks or when visible soiling occurs. A clogged pre-filter reduces filter performance and strains the pump. Regular replacement ensures optimal water quality.
The set contains four orange pre-filter foam units. The foams measure 18.5 cm in length and 6 cm in diameter. No additional mounting material is required.
No, the foams are designed for single use. Cleaning is not recommended as the pore structure may be damaged. Use only original OASE replacement parts for replacement.
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