1. Introduction
The SunSun HJ-611B internal aquarium filter is designed to provide efficient mechanical, biological, and chemical filtration for aquariums up to 60 liters. This compact unit integrates a pump and filtration system, ensuring clear and healthy water for your aquatic environment. It features a 6W pump with a flow rate of 450 liters per hour, a pivotable outlet nozzle, and an optional diffuser for aeration.
2. Safety Information
- Always disconnect the power supply before performing any maintenance or cleaning.
- Ensure the filter is fully submerged in water during operation to prevent damage to the pump.
- Do not operate the filter if the power cord or plug is damaged.
- This appliance is intended for indoor use only and for filtering aquarium water.
- Keep out of reach of children.
3. Package Contents
Please check that all items are present and in good condition:
- SunSun HJ-611B Internal Filter Unit
- Filter Media (Activated Carbon Cartridge, Filter Sponge)
- Pivotable Outlet Nozzle
- Air Diffuser Tube
- Suction Cups for Mounting
4. Product Overview
The HJ-611B filter consists of a pump head, a filter media compartment, and an outlet system. The filter media compartment houses a standard activated carbon filter and a filter sponge, providing two stages of filtration.
Figure 1: Exploded view showing the pump head, filter media cartridge, filter sponge, and filter housing.
5. Setup Instructions
5.1. Assembly
- Ensure the filter sponge and activated carbon cartridge are correctly placed within the filter media compartment. The filter media should be arranged from coarse to fine.
- Attach the filter media compartment to the pump head.
- Connect the pivotable outlet nozzle to the pump head. If aeration is desired, attach the air diffuser tube to the designated inlet on the nozzle.
Figure 2: Assembled filter with the air diffuser tube for oxygenation.
Figure 3: Assembled filter with the spray bar for even water distribution.
5.2. Placement in Aquarium
- Attach the suction cups to the back of the filter unit.
- Mount the filter securely to the inside wall of your aquarium, ensuring it is fully submerged in water. The outlet nozzle should be positioned to create adequate water circulation.
- If using the air diffuser, ensure the air tube extends above the water surface.
Figure 4: Filter dimensions: 135mm height, 45mm width, 35mm depth.
6. Operating Instructions
6.1. Power Connection
Once the filter is correctly assembled and submerged, plug the power cord into a suitable electrical outlet. The pump will start operating immediately.
6.2. Flow Rate Adjustment
The filter features a slider on the pump head to adjust the water flow rate. Move the slider to increase or decrease the flow as needed for your aquarium's inhabitants and size.
6.3. Aeration Function
If the air diffuser tube is connected, the filter will draw air from above the water surface and release fine bubbles into the aquarium, providing additional oxygenation. Adjust the air intake for desired bubble intensity.
Figure 5: Flow rate chart for various SunSun HJ-B series filters, including HJ-611B.
7. Maintenance
Regular maintenance is crucial for optimal filter performance and water quality.
7.1. Cleaning Filter Media
- Disconnect the filter from the power supply.
- Carefully remove the filter from the aquarium.
- Disassemble the filter by separating the pump head from the filter media compartment.
- Remove the filter sponge and activated carbon cartridge. Rinse the filter sponge thoroughly with old aquarium water (not tap water, as chlorine can kill beneficial bacteria) to remove accumulated debris.
- The activated carbon cartridge should be replaced every 2-4 weeks, as its adsorptive capacity diminishes over time.
- Reassemble the filter and place it back into the aquarium.
7.2. Cleaning the Pump Impeller
If the pump's performance decreases or it becomes noisy, the impeller may need cleaning.
- Disconnect the filter from the power supply.
- Remove the pump head from the filter housing.
- Carefully remove the impeller cover and then the impeller itself.
- Clean the impeller and its shaft with a small brush to remove any debris or mineral buildup.
- Reassemble the impeller and pump head, ensuring all parts fit correctly.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Reduced water flow | Clogged filter media; dirty impeller; air in pump | Clean or replace filter media; clean impeller; ensure filter is fully submerged and free of air bubbles. |
| Filter is noisy | Impeller not seated correctly; debris in impeller chamber; air in pump | Check and reseat impeller; clean impeller chamber; ensure filter is fully submerged and free of air bubbles. |
| Filter not starting | No power; impeller jammed; damaged motor | Check power connection; clean impeller; if motor is damaged, contact support. |
9. Specifications
- Model: HJ-611B
- Brand: SunSun
- Power: 6 W
- Max Flow Rate: 450 L/h (7.5 Liters per minute)
- Recommended Aquarium Volume: Up to 60 Liters
- Dimensions (L x W x H): 20 cm x 10 cm x 8 cm (approximate, based on 135mm height, 45mm width, 35mm depth from image)
- Material: Plastic
- Power Source: Electric Cable
10. Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact your retailer. Keep your proof of purchase for warranty claims.
