Oase Biomaster 250 Thermo Canister Filter with prefilter

One of the key components of having a healthy and clean aquarium is the filtration of your water. A very effective way to do this is with a canister filter. Aquarium filters in general help generate flow, absorb substances that cause turbidity, and enrich the water with oxygen.

Beneficial bacteria that settle within the unit’s filter media help to break down and remove waste from aquarium inhabitants. External filters typically have different types of filter media in several layers throughout the filter unit. These filters operate outside of the aquarium and can be conveniently stored in a cabinet under the aquarium, making them easily accessible for maintenance.

The Oase BioMaster 250 Thermo is a premium canister filter with an integrated heater, designed to deliver powerful external filtration while keeping your display tank clean and uncluttered. Rated for aquariums up to 250L and pushing up to 900 L/h, it’s an excellent choice for freshwater community tanks, planted aquariums, and many marine setups that need reliable flow and stable temperature.​

Maintenance is quick and low-mess thanks to Oase’s EasyClean pre-filter design, allowing you to clean the pre-filter without dismantling the entire canister. That means steadier performance between full services and less disruption to your beneficial bacteria in the main media baskets.​

Key Features:​

  • External canister filter with integrated HeatUp 150W heater (less in-tank equipment).​
  • EasyClean pre-filter chamber for fast routine cleaning without pulling apart the full canister.​
  • Max flow rate up to 900 L/h for strong turnover and clear water.​
  • Suitable for aquariums up to 250L.​
  • Large filtration capacity: 4.4L filter volume plus 0.40L pre-filter volume.​
  • Freshwater and saltwater compatible.​
  • 16/22mm hose connection size (inner/outer).​

Specifications:​

  • Recommended aquarium size: Up to 250L.​
  • Max flow rate: 900 L/h.​
  • Power consumption: 15W (filter) + 150W (heater).​
  • Max head height: 1.30m.​
  • Dimensions (L x W x H): 240 x 240 x 370mm.​
  • Hose size: 16/22mm.​

Great for shoppers comparing canister filters: the BioMaster 250 Thermo combines high media volume, easy pre-filter maintenance, and an integrated heater in one neat external unit.

  • Aquarium Filter Biomaster 250
  • All filter media, with bonus black prefilter 60ppi
  • intake tube with inlet strainer, water distributor nozzle,
  • spray bar, inlet and outlet adapters with flow control,
  • Integrated Heater
  • tubing, fittings, heater adapter, and power cable
  • EasyClean pre-filter module
  • Includes Integrated Heater
  • No mess maintenance
  • Sealed filtration pathways
  • Hel-X Biomedia –
  • Carbon pre-filter foams –
  • Adjustable flow control –
  • Easy priming –
  • Quiet operation –
  • Made in Italy, backed by German engineering
  • Fresh and marine water compatible
  • UL certified filter
  • 3 year warranty plus 1 year warranty extension with online registration
  • Suitable for aquariums up to max.    250L
  • Dimensions (L x W x H)    mm    240 x 240 x 480
  • Rated voltage        230 V / 50 Hz
  • Power consumption      22 W
  • Power cable length   1.50m
  • Guarantee (+ request guarantee)     Years    3 + 1
  • Max. flow rate    l/h    900LPH
  • Max. head height, metres       1.80m
  • Hose (quantity/length)        1 UNIT/4 m
  • Connection for hoses ø (inner/outer)        16 / 22 mm
  • Filter volume     6.8
  • Pre-filter volume    0.60
  • Suitable for freshwater        Yes
  • Suitable for saltwater        Yes
SKU 08OA024
Barcode # 4010052427379
Brand Oase
Shipping Weight 5.4000kg
Shipping Width 0.240m
Shipping Height 0.480m
Shipping Length 0.240m
Shipping Cubic 0.027648000m3

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