1. Introduction
Thank you for choosing the TUNAI S0B0 WP-1105F Internal Aquarium Filter. This filter is designed to provide efficient mechanical filtration, circulation, and oxygenation for your aquarium, ensuring a clean and healthy environment for your aquatic life. It is suitable for both freshwater and saltwater aquariums. Please read this manual carefully before installation and operation to ensure proper use and maintenance.
2. Safety Instructions
- Always disconnect the power supply before performing any maintenance, installation, or cleaning of the filter.
- Ensure your hands are dry when plugging or unplugging the power cord.
- This appliance is for indoor use only and must be fully submersible. Do not operate the filter out of water.
- Do not use the filter if the power cord or plug is damaged.
- Keep the filter 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 TUNAI S0B0 WP-1105F Internal Aquarium Filter Unit

The image displays the TUNAI S0B0 WP-1105F internal aquarium filter alongside its product box, illustrating the compact design of the filter unit.
4. Product Features
The TUNAI S0B0 WP-1105F Internal Aquarium Filter offers several key features for optimal aquarium health:
- Completely Submersible: Designed for full submersion within the aquarium.
- Mechanical Filtration: Effectively removes debris and particulate matter from the water using a filter sponge.
- Adjustable Water Flow: Allows customization of water circulation based on tank needs.
- Suitable for Fresh and Marine Water: Versatile for various aquatic environments.
- Oxygenation: Aids in increasing dissolved oxygen levels in the water.

An infographic detailing the WP-1105F filter's functions: Filtration, Circulation, and Oxygenation, along with its voltage, frequency, watt, and F.Max specifications.

This image illustrates the main components of the filter, including the rainfall tube pipe, ceramic shaft, strong suction cups, and the bio-chemical cotton filter box.
5. Setup and Installation
- Unpack: Carefully remove the filter from its packaging and inspect for any damage.
- Assemble: Attach the rainfall tube pipe to the filter outlet if desired. Ensure all connections are secure.
- Position: The filter is fully submersible. Attach the suction cups firmly to the aquarium wall, ensuring the filter is completely submerged in water. Position it in an area that allows for good water circulation throughout the tank.
- Connect Power: Once the filter is securely installed and fully submerged, connect the power plug to a suitable electrical outlet.

The filter is shown operating within an aquarium, demonstrating the rainfall tube pipe feature that aids in water circulation and oxygenation.
6. Operating Instructions
- Power On: Plug the filter into a power outlet. The filter will immediately begin to draw water and initiate filtration.
- Adjust Flow Rate: The filter features an adjustable water flow. Locate the flow adjustment knob (if present) and turn it to increase or decrease the water flow according to your aquarium's requirements and the needs of your aquatic inhabitants.
- Monitor Performance: Regularly observe the water clarity and filter output to ensure optimal performance.
7. Maintenance
Regular maintenance is crucial for the longevity and efficiency of your filter and the health of your aquarium.
- Filter Sponge Cleaning: It is recommended to clean the filter sponge every 2-4 weeks, or more frequently if water flow significantly decreases or the water appears cloudy.
- Cleaning Procedure:
- Disconnect the filter from the power supply.
- Carefully remove the filter from the aquarium.
- Disassemble the filter housing to access the filter sponge.
- Gently rinse the filter sponge in a bucket of old aquarium water (water removed during a water change). Do not use tap water as chlorine can kill beneficial bacteria essential for biological filtration.
- Reassemble the filter and reinstall it in the aquarium.
- Reconnect the power supply.
- Impeller Cleaning: Periodically check and clean the impeller and its housing to prevent blockages and ensure smooth operation.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Filter not starting or low flow | Not plugged in; power outage; clogged impeller; clogged filter sponge; airlock. | Check power connection; clean impeller and sponge; ensure filter is fully submerged and gently shake to release air. |
| Excessive noise | Impeller obstruction; improper installation; air in the filter. | Clean impeller; ensure filter is securely attached and fully submerged; gently shake to release air. |
| Water remains cloudy | Filter sponge needs cleaning; filter too small for tank size; overfeeding; new tank syndrome. | Clean filter sponge; consider a larger filter or additional filtration; reduce feeding; perform partial water changes. |
9. Specifications
| Specification | Value |
|---|---|
| Model | WP-1105F |
| Voltage | AC 220V-240V |
| Frequency | 50/60Hz |
| Power | 5W |
| Max Flow Rate (F.Max) | 200 L/H |
| Product Dimensions (LxWxH) | 6 x 10 x 20 cm |
| Item Weight | 500 g |

This image lists the key specifications of the WP-1105F filter, including model number, voltage, frequency, power (5W), and maximum flow rate (200 L/H).

An illustration showing the dimensions of the WP-1105F filter, indicating a width of 9 cm and a height of 13 cm.
10. Warranty and Support
For any questions, concerns, or support regarding your TUNAI S0B0 WP-1105F Internal Aquarium Filter, please contact the Tunai Store customer support team. While specific warranty details are not provided in this manual, please retain your proof of purchase for any warranty claims.
Contact Information: Please refer to your purchase documentation or the Tunai Store's official website for the most current contact details.