Atman HK-0400 Back Hanging Filter

Atman HK-0400 Back Hanging Filter

Compact HOB Filtration for Small Aquariums

The Atman HK-0400 is a compact and efficient Hang-On-Back (HOB) aquarium filter designed for nano, small planted, and freshwater aquariums. Its space-saving design keeps the filtration unit outside the aquarium while providing continuous water circulation and filtration.

With a maximum flow rate of 372 L/H and only 4.2W power consumption, the HK-0400 delivers efficient filtration while keeping electricity usage low. Its adjustable flow control also makes it easier to tailor water movement according to your aquarium's requirements.

Key Features

💧 372 L/H Flow Rate
Provides strong water circulation for small aquariums, helping move suspended waste and debris toward the filter.

⚡ Low Power Consumption — 4.2W
The energy-efficient motor is designed for continuous operation without consuming excessive electricity.

🎚️ Adjustable Water Flow
The adjustable flow control allows you to reduce or increase water movement according to your livestock and aquascape requirements.

🌊 Surface Skimming
The HK-0400 features a surface-skimming function that helps collect floating debris and surface film, keeping the water surface cleaner and promoting better gas exchange.

🧽 Mechanical & Biological Filtration
The filtration system helps remove suspended particles while providing filtration capacity for beneficial bacteria. The supplied media can also be supplemented or replaced with other suitable aquarium filter media.

✨ Space-Saving HOB Design
The filter hangs on the back of the aquarium, keeping bulky equipment out of the display area. This makes it particularly attractive for planted tanks and aquascapes where maintaining a clean appearance is important.

🔧 Easy Installation & Maintenance
The simple HOB design makes installation and routine cleaning straightforward. Filter media and components can be easily accessed for maintenance.

Ideal For

• 🌿 Planted Aquariums

• 🦐 Shrimp Tanks

• 🐠 Small Community Tanks

• 🐌 Snail & Invertebrate Tanks

• 🌱 Nano Aquascapes

• 💧 Small Freshwater Aquariums

The HK-0400 is generally intended for small aquariums, with commonly listed recommendations around 15–30 litres. Actual suitability will depend on livestock, stocking level, planting density and the amount of filtration required.

Technical Specifications

• Brand: ATMAN

• Model: HK-0400

• Filter Type: Hang-On-Back (HOB)

• Maximum Flow Rate: 372 L/H

• Power Consumption: 4.2W

• Voltage: 220–240V

• Frequency: 50/60Hz

• Flow Control: Yes

• Surface Skimmer: Yes

• Recommended Aquarium: Approximately 15–30L

• Recommended Tank Length: Approximately 25–40 cm

• Approx. Dimensions: 14.8 × 9.3 × 16.8 cm

Specifications may vary slightly depending on production batch or regional version.

Installation

1. Hang the filter securely on the back of the aquarium.

2. Make sure the filter is positioned firmly and level with the aquarium.

3. Fill the filter chamber with aquarium water before switching it on.

4. Ensure the aquarium water level is suitable for the filter.

5. Switch on the filter and allow it to begin circulating water.

6. Adjust the flow according to your aquarium's requirements.

7. Position the surface skimmer appropriately if you want to remove surface film.

Important: Do not allow the pump to operate dry. Always ensure the filter is properly primed with water before starting it.

Maintenance

Regular maintenance helps maintain consistent flow and filtration performance.

• Clean the mechanical filter media when it becomes clogged.

• Remove accumulated debris from the intake and impeller area.

• Clean the filter housing periodically.

• Rinse biological media gently in removed aquarium water rather than untreated tap water to help preserve beneficial bacteria.

• Avoid over-cleaning biological media unnecessarily.

Why Choose the Atman HK-0400?

The Atman HK-0400 is a practical choice when you need effective filtration without sacrificing valuable aquarium space. Its combination of 372 L/H flow, 4.2W energy consumption, adjustable flow control and surface skimming makes it especially suitable for small planted and freshwater aquariums.

Whether you're setting up a nano aquascape, shrimp tank or small community aquarium, the HK-0400 provides a compact filtration solution while keeping the inside of your aquarium clean and uncluttered.

Atman HK-0400 — Compact size, efficient filtration, and cleaner water.