The OASE BioStyle 30 is a premium hang-on-back aquarium filter engineered for aquariums up to 30 gallons (115 liters). Designed with German precision and manufactured in Italy, this compact filtration system delivers powerful multi-stage water purification while maintaining a clean and modern aquarium aesthetic. It is ideal for freshwater community tanks, planted aquariums, shrimp setups, and even marine aquariums requiring reliable mechanical and biological filtration.

The BioStyle 30 features a comprehensive multi-stage filtration system that combines mechanical, biological, and chemical filtration into one streamlined unit. This ensures crystal-clear water, removal of organic waste, and long-term biological stability. The mechanical stage traps uneaten food, debris, and suspended particles. The biological filtration media provides extensive surface area for beneficial nitrifying bacteria to colonize, converting toxic ammonia and nitrite into safer nitrate. The integrated chemical media helps reduce odors, discoloration, and dissolved impurities, improving overall water clarity.

One of the standout features of the OASE BioStyle 30 is its dual-cartridge filtration design, paired with biological foam inserts. This layered structure increases filtration efficiency while simplifying maintenance. The cartridges are easy to remove and replace, making routine cleaning fast and beginner-friendly. An integrated maintenance indicator signals when cleaning or cartridge replacement is needed, helping aquarists maintain optimal water quality.

The adjustable flow control system allows users to fine-tune water movement according to livestock needs. This is especially beneficial for planted aquariums, Betta tanks, shrimp colonies, or delicate species that prefer gentler currents. The telescopic intake tube adapts to different aquarium heights, ensuring flexible installation across a wide range of tank dimensions.

Unlike bulky internal filters, the BioStyle 30 mounts discreetly on the back of the aquarium. Its hose-free design preserves aquascape aesthetics while maximizing internal tank space. The integrated leveling support ensures secure placement and stable positioning.

The OASE BioStyle 30 operates quietly and efficiently, making it suitable for living rooms, bedrooms, offices, or professional environments. Its energy-efficient motor ensures consistent performance with low power consumption.

Whether you are building a high-clarity aquascape, maintaining a freshwater community aquarium, or upgrading from a standard power filter, the OASE BioStyle 30 offers durability, performance, and elegant design in one advanced filtration system.

Key Features:

- For aquariums up to 30 gallons / 115 L
- Multi-stage mechanical, biological & chemical filtration
- Dual filter cartridges with biological foam
- Adjustable flow rate for delicate species
- Telescopic intake tube
- Cleaning indicator for easy maintenance
- Quiet and energy-efficient operation
- German engineered, made in Italy
- 3-year manufacturer warranty

The OASE BioStyle 30 is a high-performance hang-on-back filter designed for aquarists who demand clear water, stable parameters, and a sleek aquarium appearance.

Meta Description (BioStyle 30)

Premium hang-on-back filter for aquariums up to 30 gallons. OASE BioStyle 30 delivers multi-stage mechanical, biological, and chemical filtration with adjustable flow and quiet operation.

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