The SUNSUN HBL-302 is a compact hang-on-back (HOB) aquarium filter designed to provide efficient external filtration for small to medium aquariums. It hangs on the back of the tank and continuously cleans water through mechanical, chemical, and biological filtration to maintain a healthy aquatic environment.

Key Features

Multi-Stage Filtration System

The SUNSUN HBL-302 uses a multi-stage filtration system that combines mechanical, chemical, and biological filtration to remove dirt, impurities, and harmful toxins from aquarium water.

Mechanical Filtration Efficiency

The filter effectively traps floating debris and solid waste using sponge or filter pads, helping keep the water clear and clean.

Chemical Filtration Support

It supports activated carbon or similar media that helps remove odors, discoloration, and dissolved impurities from the water.

Biological Filtration Enhancement

The filter provides space for bio-media such as ceramic rings, which helps grow beneficial bacteria that break down ammonia and nitrites.

Compact Hang-On Design

The filter is designed to hang on the back of the aquarium, saving internal tank space and making it ideal for nano and small aquarium setups.

Quiet and Smooth Operation

It operates with a low-noise motor system, making it suitable for home and office environments where silence is preferred.

Adjustable Flow Rate

The water flow can be adjusted according to tank size and fish requirements, ensuring proper circulation without stressing aquatic life. 

Easy Maintenance and Installation

The filter is simple to install and clean, making it beginner-friendly and convenient for regular aquarium maintenance.

Quick Facts

• Brand: SUNSUN
• Model: HBL-302
• Type: Hang-On-Back (External Filter)
• Flow Rate: ~350 L/H
• Power Consumption: 3W
• Suitable Tank Size: Up to ~40–60 liters
• Filtration Types: Mechanical, Chemical, Biological
• Installation: External hang-on design
• Noise Level: Low and quiet
• Maintenance: Easy and beginner-friendly