Slim HOB Aquarium Filter – Quiet, Efficient & Easy to Set Up

Keep your fish tank crystal clear with this ultra-slim Hang-On-Back (HOB) Aquarium Filter. Designed with a sleek waterfall-style flow and patent-pending priming system, this compact filter is perfect for nano, pico, and small aquariums up to 5 gallons. Made in Mainland China.

Why You'll Love This Filter

Ultra-Slim & Compact Design: At just 3.8–5cm thin, this filter sits discreetly on your tank rim — barely noticeable, yet highly effective.
Whisper-Quiet Operation: Engineered for silent performance so your aquatic environment stays serene — ideal for bedrooms, offices, and living spaces.
Adjustable Flow Rate: Dial in the perfect water flow for your tank's inhabitants — gentle enough for shrimp and betta fish, yet powerful enough to maintain a clean, healthy aquarium.
Auto-Restart Technology: Patent-pending priming system automatically restarts the filter if power is interrupted and restored — no manual re-priming needed.
Power-Saving Performance: Energy-efficient motor keeps running costs low while delivering consistent filtration 24/7.
Everything Included: Comes ready to install right out of the box — filter body, intake tube, extension tube, intake screen, and filter cartridge all included.

Specifications

Material: Durable BPA-free plastic
Color: Black
Target Species: Fish, Shrimp, Betta
Available Sizes:
- Small: 18 × 7 × 3.8 cm (7.09 × 2.76 × 1.50 in)
- Medium: 26.5 × 13.5 × 4.5 cm (10.43 × 5.31 × 1.77 in)
- Large: 26.5 × 18.5 × 5 cm (10.43 × 7.28 × 1.97 in)
Package Includes: 1× Filter body, intake tube, extension tube, intake screen, filter cartridge
Country of Origin: Made in Mainland China

Perfect For

Nano and pico tanks up to 5 gallons
Betta fish, shrimp, and small tropical fish
Desktop, bedroom, and office aquariums
Beginners looking for a simple, plug-and-play filtration solution

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Helpful Resources

For more information on responsible aquarium keeping and aquatic animal welfare, visit the U.S. Fish & Wildlife Service.

Frequently Asked Questions

Q: What size aquarium is this HOB filter suitable for?

A: This slim aquarium HOB filter is designed for nano and pico tanks up to 5 gallons. Its compact waterfall design makes it ideal for small desktop or bedroom aquariums housing betta fish, shrimp, and other small freshwater species.

Q: Is the aquarium filter noisy during operation?

A: No — this filter is engineered for whisper-quiet operation. Its silent motor and smooth waterfall flow ensure minimal disturbance to both your fish and your environment, making it perfect for bedrooms and offices.

Q: What happens if the power goes out?

A: Thanks to the patent-pending auto-restart priming system, the filter will automatically restart and resume normal operation once power is restored — no manual intervention required.

Q: Does the filter come with everything needed for setup?

A: Yes! The package includes the filter body, intake tube, extension tube, intake screen, and filter cartridge — everything you need for a complete, out-of-the-box installation.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.