OASE BioMaster 30 PPI Coarse Pre-Filter Foam — Orange (49742 / 49743)

The OASE BioMaster 30 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 30 pores per inch (ppi), this is the coarse option in the OASE BioMaster pre-filter foam range — providing effective mechanical pre-filtration that captures large debris and particles before they enter the main filter body, protecting the fine and biological filter media downstream and extending overall filter service intervals. Available in a set of 4 (49742) or a set of 6 (49743) — choose the pack size that matches your BioMaster model.

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

Key Features

• 30 ppi coarse filtration: Captures large debris, particles, and detritus before water enters the main filter body — protects fine and biological media downstream
• Reduces main filter maintenance: By removing large particles at the pre-filter stage, biological and fine media stay cleaner for longer — significantly extending service intervals
• EasyClean module compatible: Simply insert into the BioMaster EasyClean pre-filter module — no tools required, no disturbance to the main filter chamber
• Colour-coded orange: Easy identification — coarse grade, distinguishing it from the 45 ppi blue (fine) and 60 ppi black (ultra-fine) variants
• Two pack sizes available: Set of 4 (49742) or Set of 6 (49743) — 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 (49742)
• BioMaster 350 / Thermo 350: 5 foams — order Set of 6 (49743) and keep 1 spare
• BioMaster 600 / Thermo 600: 6 foams — order Set of 6 (49743)
• BioMaster 850 / Thermo 850: 6 foams — order Set of 6 (49743)

Compatibility

• Compatible with: All OASE BioMaster and BioMaster Thermo external canister filters — 250, 350, 600, 850 and BioMaster² range
• Foam grade: 30 ppi (coarse) — orange

Product Details

• Brand: OASE
• Product Code: 49742 (Set of 4) / 49743 (Set of 6)
• Type: Pre-Filter Foam Set — 30 PPI Coarse
• Colour: Orange
• PPI Grade: 30 ppi (coarse)
• Compatibility: All OASE BioMaster and BioMaster Thermo 250 / 350 / 600 / 850