SunSun HW-303A External Canister Filter 1400L/H for Aquariums 150–400L

The SunSun HW-303A is a reliable external canister filter designed for freshwater and marine aquariums from 150 to 400 litres. Delivering powerful mechanical, biological, and chemical filtration, it provides excellent water clarity while maintaining healthy conditions for fish, shrimp, and aquatic plants.

Designed with both beginners and experienced aquarists in mind, the HW-303A features a one-button self-priming system that quickly fills the filter after maintenance, eliminating the need for manual siphoning. The Start-Stop quick-release valve system allows the hoses to be disconnected easily without water spills, making maintenance fast and convenient.

The filter includes three removable media baskets with carrying handles, allowing you to customise the filtration using different types of mechanical, biological, or chemical filter media. Supplied with filter sponges, zeolite, and a spray bar, the HW-303A is ready to provide complete filtration immediately after installation.

The included spray bar improves water circulation and oxygenation while creating gentle water movement throughout the aquarium.

Key Features

• Suitable for freshwater and marine aquariums from 150–400 litres
• Powerful 1400 L/h flow rate
• Mechanical, biological, and chemical filtration
• One-button self-priming system
• Quick-release Start-Stop valve block
• Three removable media baskets
• Includes spray bar for improved circulation and aeration
• Quiet and energy-efficient operation
• Large filtration capacity
• Easy installation and maintenance
• Suitable for continuous operation

Benefits

• Maintains crystal-clear aquarium water
• Supports healthy biological filtration
• Improves oxygenation through the included spray bar
• Customisable media configuration
• Easy startup and maintenance
• Quiet, reliable performance
• Ideal for medium and large aquariums

Package Includes

• SunSun HW-303A external canister filter
• 3 × filter media baskets
• 3 × filter sponge inserts
• Zeolite filter media
• Spray bar
• Inlet and outlet pipe set
• Hoses and connection kit
• Quick-release valve assembly

Technical Specifications

• Brand: SunSun
• Model: HW-303A
• Product Type: External Canister Filter
• Recommended Aquarium Size: 150–400 Litres
• Maximum Flow Rate: 1400 L/h
• Power Consumption: 35W
• Number of Media Baskets: 3
• Maximum Head Height: 2 m
• Dimensions: 258 × 258 × 430 mm
• Power Supply: 230V / 50Hz
• Suitable for: Freshwater and marine aquariums