BioStyle 20
The OASE BioStyle 20 is a compact and efficient hang-on-back aquarium filter designed for aquariums up to 20 gallons (75 liters). Combining German engineering with Italian manufacturing quality, this filtration system offers reliable multi-stage purification in a sleek, space-saving format ideal for small freshwater and marine aquariums.
Engineered to maintain stable and healthy aquatic environments, the BioStyle 20 integrates mechanical, biological, and chemical filtration within a single compact housing. The mechanical stage removes suspended debris and organic waste, ensuring visibly clear water. The biological stage supports the growth of beneficial bacteria responsible for converting ammonia and nitrite into less harmful nitrate. The chemical filtration component helps reduce odors, discoloration, and dissolved impurities for improved overall clarity.
The BioStyle 20 uses replaceable multi-stage cartridges combined with biological foam inserts to maximize filtration surface area while keeping maintenance simple. The modular cartridge design allows quick removal and replacement, making it ideal for beginners and experienced hobbyists alike. An integrated cleaning indicator provides visual feedback when servicing is required, preventing neglect and supporting long-term water stability.
Flow rate adjustability is a major advantage of the OASE BioStyle 20. Users can reduce or increase water circulation depending on livestock requirements. This makes it especially suitable for Betta fish, shrimp tanks, nano community fish, and planted aquariums that require controlled flow conditions.
The telescopic intake tube allows flexible height adjustment to accommodate different tank dimensions. The filter mounts cleanly on the back of the aquarium, preserving interior aquascape space and eliminating the need for hoses. Its discreet profile maintains a modern and professional aquarium appearance.
Quiet motor technology ensures low-noise performance, making the BioStyle 20 ideal for bedrooms, home offices, or living areas. Its energy-efficient operation reduces electricity consumption while maintaining consistent filtration performance.
Whether used in a beginner freshwater setup, a shrimp breeding tank, or a small planted aquarium, the OASE BioStyle 20 delivers dependable water purification, easy maintenance, and elegant design.
Key Features:
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- For aquariums up to 20 gallons / 75 L
- Multi-stage mechanical, biological & chemical filtration
- Replaceable cartridge system with biological foam
- Adjustable flow control
- Telescopic intake tube
- Integrated cleaning indicator
- Quiet and energy-efficient operation
- German engineered, made in Italy
- 3-year manufacturer warranty
The OASE BioStyle 20 is a compact yet powerful filtration solution designed to keep small aquariums clean, stable, and visually appealing.