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Oase BioStyle 180 Hang-On Filter – Compact, Efficient, and Space-Saving Aquarium Filtration System.
The Oase BioStyle 180 Hang-On Filter is a high-performance, compact filtration solution designed for aquarists who seek the perfect balance between powerful water purification, silent operation, and a clutter-free aquarium setup. Ideal for those who find traditional external or internal filters unsuitable, the BioStyle 180 delivers advanced filtration without the need for external hoses, cabinets, or complicated installation — simply hang it on the back of your tank and enjoy crystal-clear water effortlessly.
Unlike bulky external canister filters, the Oase BioStyle 180 eliminates the need for long hose connections or external compartments. It fits neatly behind your aquarium, maintaining the visual appeal of your underwater world while ensuring maximum functionality. This innovative hang-on-back (HOB) filter is designed to save space inside your aquarium, giving your aquatic plants, decorations, and fish more room to thrive.
Oase, a trusted German brand known for precision engineering and superior water technology, integrates multi-stage filtration within this sleek, low-profile design. The BioStyle 180 uses a three-stage filtration system—mechanical, biological, and chemical—to ensure optimal water quality. The mechanical filter foam captures larger debris such as uneaten food, fish waste, and plant matter. The biological media provides an ideal surface area for beneficial bacteria to colonize, breaking down harmful ammonia and nitrite compounds into safer nitrates. The chemical filtration stage can be customized with activated carbon or specialized media for toxin removal, enhanced water clarity, and odor reduction.
One of the most convenient features of the BioStyle series is its modular cartridge system that makes maintenance simple and clean. Filter cartridges can be easily removed and replaced without disturbing the biological filtration or the aquarium inhabitants. The transparent filter cover allows quick visual inspection, ensuring you know exactly when cleaning or replacement is needed.
For aquarists who prioritize silent operation, the Oase BioStyle 180 runs quietly, making it perfect for living rooms, bedrooms, or office aquariums. The integrated flow control allows you to adjust water circulation to suit your fish species—gentle for bettas and shrimp, or stronger for larger tropical fish.
With its energy-efficient motor, the BioStyle 180 offers both performance and sustainability, consuming minimal power while providing a strong filtration output suitable for aquariums up to 180 liters. It also ensures superior oxygenation of the water through surface movement, preventing stagnation and promoting a healthy, thriving aquatic ecosystem.
Space-saving hang-on design – no need for external cabinets or hoses.
Three-stage filtration – mechanical, biological, and chemical purification in one compact unit.
Quiet and efficient operation – ideal for homes, offices, and bedroom aquariums.
Easy maintenance – modular cartridges allow simple cleaning and replacement.
Adjustable flow control – customize water movement based on tank inhabitants.
Crystal-clear water – maintains excellent clarity and healthy biological balance.
German engineering by Oase – trusted for durability, innovation, and performance.
The Oase BioStyle 180 is the perfect choice for aquarists who want advanced filtration without the complexity of traditional systems. Whether you are a beginner setting up your first tank or an experienced hobbyist looking for a reliable, compact filter, the BioStyle offers both convenience and performance. Its sleek design keeps your aquarium tidy, while its powerful internal system ensures your fish and plants enjoy pristine water quality every day.
It’s not just a filter—it’s a complete water purification system designed to deliver clarity, health, and simplicity to your aquarium setup.
Freshwater and Tropical Aquariums up to 180 liters
Aquarists who prefer a clean, hose-free setup
Tanks with limited cabinet or internal space
Users seeking quiet and efficient filtration solutions
