1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your TUNAI S0B0 WP-1120F Internal Aquarium Filter. This compact and efficient filtration system is designed to maintain a clean, healthy, and balanced aquatic environment for your fish and plants in small to medium-sized aquariums. It is suitable for both freshwater and saltwater environments.

Image 1.1: The S0B0 WP-1120F Internal Aquarium Filter. This image shows the filter unit with its submersible pump and outflow pipe.
2. Safety Instructions
- Always disconnect the power supply before performing any maintenance or cleaning on the filter or aquarium.
- Ensure your hands are dry before plugging in or unplugging the filter.
- The filter is designed for indoor use only and must be completely submersible. Do not operate the filter out of water.
- Do not use the filter if the power cord or plug is damaged.
- Keep out of reach of children.
- Ensure the voltage and frequency of your power supply match the specifications of the filter.
3. Package Contents
Upon unpacking, please verify that all components are present and undamaged:
- 1 x S0B0 WP-1120F Internal Aquarium Filter Unit
- Suction Cups for mounting
- Rainfall Tube Pipe

Image 3.1: The S0B0 WP-1120F filter unit shown alongside its retail packaging.
4. Product Features
The S0B0 WP-1120F Internal Aquarium Filter offers several key features for effective aquarium maintenance:
- Completely Submersible: Designed for full immersion in the aquarium, ensuring efficient operation.
- Mechanical Filtration: Effectively removes debris and particulate matter from the water, contributing to water clarity.
- Adjustable Water Flow: Allows customization of water circulation based on your tank's specific needs.
- Easy Installation: Equipped with strong suction cups for secure attachment to the aquarium wall.
- Versatile Use: Suitable for both freshwater and marine aquarium environments.

Image 4.1: Key components of the filter, including the rainfall tube pipe, ceramic shaft, strong suction cups, and the bio-chemical cotton & filter box.
5. Specifications
| Specification | Value |
|---|---|
| Model | WP-1120F |
| Voltage | AC 220V-240V |
| Frequency | 50/60Hz |
| Power | 20W |
| Maximum Flow Rate (F.Max) | 900 L/H |
| Product Dimensions (LxWxH) | 6 x 10 x 20 cm |
| Item Weight | 500 g |

Image 5.1: Visual representation of the S0B0 WP-1120F filter's key specifications.

Image 5.2: Dimensions of the S0B0 WP-1120F filter, showing its height and width.
6. Setup Instructions
- Unpack: Carefully remove the filter and all accessories from the packaging. Inspect for any damage.
- Assemble: Attach the rainfall tube pipe to the filter's outlet. Ensure it is securely fitted.
- Position: Place the filter inside your aquarium. The filter must be fully submerged in water.
- Secure: Use the provided suction cups to firmly attach the filter to the inner wall of your aquarium. Ensure it is stable and will not detach.
- Connect Power: Once the filter is securely installed and fully submerged, plug the power cord into a suitable electrical outlet.
7. Operating Instructions
Once the filter is set up and plugged in, it will begin to operate. The S0B0 WP-1120F provides continuous mechanical filtration and water circulation.
- Adjusting Flow Rate: The filter features an adjustable water flow. Locate the flow adjustment slider or knob on the filter unit. Move it to increase or decrease the water flow rate according to your aquarium's needs and the preferences of your aquatic inhabitants.
- Rainfall Effect: The rainfall tube pipe disperses filtered water back into the aquarium, creating a gentle rainfall effect that aids in oxygenation and surface agitation.

Image 7.1: The S0B0 WP-1120F filter in operation, demonstrating the rainfall effect as water returns to the aquarium.
8. Maintenance
Regular maintenance is crucial for the optimal performance and longevity of your filter and the health of your aquarium.
- Disconnect Power: Always unplug the filter from the power outlet before performing any maintenance.
- Remove Filter: Carefully detach the filter from the aquarium wall and remove it from the water.
- Disassemble: Open the filter casing to access the filter media (e.g., filter sponge).
- Clean Filter Media: It is recommended to clean the filter sponge every 2-4 weeks. Rinse the sponge thoroughly using water from your aquarium (during a water change) or dechlorinated tap water. Do not use untreated tap water as it can kill beneficial bacteria essential for biological filtration.
- Clean Impeller: Periodically inspect and clean the impeller and its housing to prevent blockages and ensure smooth operation.
- Reassemble and Reinstall: Once cleaned, reassemble the filter components, ensuring all parts are correctly seated. Reinstall the filter in the aquarium, ensuring it is fully submerged before reconnecting power.
9. Troubleshooting
If you encounter issues with your S0B0 WP-1120F filter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Filter not starting or weak flow |
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| Excessive noise |
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| Water not clearing |
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10. Support
For any questions, concerns, or assistance with your TUNAI S0B0 WP-1120F Internal Aquarium Filter, please contact our dedicated customer support team. We are available to help you through our helpline or via the contact information provided by Tunai Store.
Please visit the TUNAI Store on Amazon.in for more information and contact options.
11. Disposal
When the product reaches the end of its lifespan, please dispose of it responsibly according to local environmental regulations. Do not dispose of electrical appliances with general household waste. Contact your local authorities for information on recycling options.