OASE BioMaster 45 PPI Fine Pre-Filter Foam — Blue (49744 / 49746)

The OASE BioMaster 45 PPI Pre-Filter Foam optimally supports the highly effective filter technology of the BioMaster and BioMaster Thermo external canister filters. The foam is simply inserted into the EasyClean pre-filter module and regular replacement keeps the water in the aquarium clean and clear, even with a large number of fish.

At 45 pores per inch (ppi), this is the fine option in the OASE BioMaster pre-filter foam range — providing effective mechanical pre-filtration that traps fine particles and debris before they enter the main filter body, reducing the load on the biological media and extending intervals between full filter services. Available in a set of 4 (49744) or a set of 6 (49746) — choose the pack size that matches your BioMaster model.

Colour coding: 45 ppi = Blue (fine) / 60 ppi = Black (ultra-fine) / 30 ppi = Orange (coarse)

Key Features

• 45 ppi fine filtration: Traps fine particles and debris before water enters the main filter body — effective mechanical pre-filtration for everyday aquarium maintenance
• Reduces main filter maintenance: Biological media stays cleaner for longer — significantly extending service intervals between full filter services
• EasyClean module compatible: Simply insert into the BioMaster EasyClean pre-filter module — no tools required, no disturbance to the main filter chamber
• Colour-coded blue: Easy identification — fine grade, distinguishing it from the 60 ppi black (ultra-fine) and 30 ppi orange (coarse) variants
• Two pack sizes available: Set of 4 (49744) or Set of 6 (49746) — choose based on your BioMaster model's foam requirement
• Replace incrementally: OASE recommends replacing foams incrementally — not all at once — to preserve the beneficial bacteria that have colonised the foam
• Timing varies: Replacement frequency varies depending on aquarium size, fish population, and plant density — replace when filter performance declines
• 100% safe for aquarium inhabitants: Compatible with animals, plants, and microorganisms
• Genuine OASE replacement media: Designed specifically for the BioMaster EasyClean pre-filter system

Foams Required Per BioMaster Model

• BioMaster 250 / Thermo 250: 4 foams — order Set of 4 (49744)
• BioMaster 350 / Thermo 350: 5 foams — order Set of 6 (49746) and keep 1 spare
• BioMaster 600 / Thermo 600: 6 foams — order Set of 6 (49746)
• BioMaster 850 / Thermo 850: 6 foams — order Set of 6 (49746)

Compatibility

• Compatible with: All OASE BioMaster and BioMaster Thermo external canister filters — 250, 350, 600, 850 and BioMaster² range
• Foam grade: 45 ppi (fine) — blue

Product Details

• Brand: OASE
• Product Code: 49744 (Set of 4) / 49746 (Set of 6)
• Type: Pre-Filter Foam Set — 45 PPI Fine
• Colour: Blue
• PPI Grade: 45 ppi (fine)
• Compatibility: All OASE BioMaster and BioMaster Thermo 250 / 350 / 600 / 850