Oase BioStyle Grey External Filters



Oase BioStyle Grey External Filters



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Discover the BioStyle External Power Filter

OASE BioStyle is a sleek, compact power filter, ideal for marine and freshwater aquariums. Each model includes multi-stage filter cartridges and biological filter foams to ensure optimal water quality and clarity. These quiet, energy efficient hang on back filters are designed for easy installation, operation, and maintenance.

BioStyle 20/30/50

Compact Power Filter - For large filter capacity

  • Compact, sleek power filter – Ideal for fresh or marine aquariums

  • Multi-stage filtration – Includes one complete cartridge that houses a 45 ppi foam for mechanical and biological filtration, a chemical mix to remove odors, impurities, and harmful nutrients, and finishes with a filter fleece for a water polishing effect

  • Biological filter foam – Also includes one 30 ppi biological filter foam that traps debris and offers surface area for additional beneficial bacteria

  • Customizable filtration – OASE offers additional chemical media cartridges that can be added to the BioStyle filter based on your aquarium needs. OASE also offers an empty cartridge for further optimization. all sold separately

  • Adjustable leveler – Foot for securing filter to different aquarium glass thickness

  • Telescopic intake – Transparent tube, extends from 6 in. to 14 in. for varying aquarium heights

  • Easy maintenance – Cleaning indicator shows when it is time to change the mess-free, disposable multi-stage filter cartridge or clean the biological filter foam

  • Adjustable flow control – Built-in to the filter to change the intensity of water movement and increase oxygenation, or input of oxygen at the surface

  • Quiet operation – Energy efficient, UL certified filter

  • Quality design – Made in Italy, with German engineering from OASE and backed by a 3-year warranty

  • What’s in the Box – Aquarium Filter, multi-stage filter cartridges, biological filter foams with reusable frame, telescopic intake with inlet strainer, and 6 ft. power cable.


Specs BioStyle
Dimensions (in.) 6 x 5.25 x 8.5 8.5 x 6 x 8.5 11 x 6.75 x 8.5
Dimensions (mm) 152 x 133 x 216 216 x 152 x 216 279 x 171 x 216
Rated voltage 120V / 60 Hz
Power consumption, filter 4.5 watts 5 watts 5.5 watts
Power cord length 6 ft. (1.8 m)
Maximum flow rate 100 gph (380 l/h) 150 gph (560 l/h) 250 gph (950 l/h)
Suitable for aquariums up to max. 20 gal (75 L) 30 gal (115 L) 50 gal (180 L)
Suitable for fresh and marine water
Warranty 3 Years

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