1. Product Overview
The SUNSUN EW-602, EW-603, and EW-604 are non-powered aquarium filter buckets designed for efficient water purification in both freshwater and saltwater tanks. These units are silent in operation as they do not contain an integrated pump, relying instead on an external pump (not included) to circulate water through the filter media. Their transparent design allows for easy monitoring of media cleanliness.
2. Specifications
The EW series filter buckets are available in three models, each suited for different tank sizes. All models feature a 16mm (0.62 inch) inlet diameter for hose connection.
| Model | Inlet Diameter | Suitable for Fish Tank Size | Filter Bucket Dimensions (Diameter x Height) |
|---|---|---|---|
| EW-602 | 16mm / 0.62 inch | Up to 15 Gallons (under 40cm) | 10.5cm (4.13in) x 20cm (7.87in) |
| EW-603 | 16mm / 0.62 inch | Up to 30 Gallons (under 60cm) | 12.5cm (4.92in) x 23cm (9.05in) |
| EW-604 | 16mm / 0.62 inch | Up to 55 Gallons (under 100cm) | 15.5cm (6.1in) x 29cm (11.41in) |
Additional Product Properties:
- Type: Fish Aquarium Filter
- Origin: Mainland China
- High-concerned chemical: None
3. Package Contents
Upon opening your package, please verify that all components are present and undamaged. The typical package for a SUNSUN EW series filter bucket includes:
- SUNSUN EW-602, EW-603, or EW-604 Filter Bucket (depending on model purchased)
- Inlet and Outlet Hose Connections
- Filter Media (e.g., coarse sponges, fine filter cotton, biochemical balls)
- Water Filter Plates
- Hoses (may vary by package, external pump hoses are typically separate)
4. Setup Instructions
The SUNSUN EW series filter buckets are non-powered and require an external water pump (not included) to function. Ensure you have a suitable pump before proceeding.
4.1. Filter Media Installation
- Open the filter bucket by unlatching the clips on the sides and removing the lid.
- Place the water filter plate at the bottom of the bucket.
- Arrange the filter media in layers. A common setup involves:
- Bottom Layer: Coarse filter media (e.g., biochemical balls) for biological filtration and initial mechanical filtration.
- Middle Layer: Filter cotton (e.g., dense, middle, sparse sponges) for mechanical filtration, trapping impurities.
- Top Layer: Fine filter media or additional filter cotton for polishing water.
- Ensure the media is stacked neatly to allow for even water flow.
- Place the top water filter plate and securely close the lid, ensuring all clips are latched.
4.2. Hose Connection and Placement
- Connect the inlet hose from your external water pump to the 'IN' port on the filter bucket.
- Connect the outlet hose from the 'OUT' port on the filter bucket to your aquarium.
- Ensure all connections are secure to prevent leaks.
- Position the filter bucket below the aquarium water level to facilitate siphoning and efficient pump operation.
4.3. Priming and Starting
- Once hoses are connected and the bucket is closed, ensure the external pump is off.
- Prime the filter by manually siphoning water into the inlet hose until the filter bucket is full and water begins to flow out of the outlet hose. Alternatively, some external pumps have a priming button.
- Once primed, switch on your external water pump. Water should begin circulating through the filter bucket and back into the aquarium.
- Check for any leaks immediately after starting.
5. Operating Instructions
Once properly set up and primed, the SUNSUN EW series filter bucket operates continuously as long as the external pump is running. Monitor the water flow and the clarity of your aquarium water.
- Continuous Operation: For optimal water quality, the filter should run 24/7.
- Flow Monitoring: Periodically check the water flow rate. A decrease in flow often indicates clogged filter media.
- Visual Inspection: The transparent design allows you to visually inspect the filter media for excessive dirt or debris buildup.
6. Maintenance
Regular maintenance is crucial for the longevity and efficiency of your filter bucket and the health of your aquarium.
6.1. Cleaning Filter Media
- Turn off and unplug your external water pump.
- Close any valves on the inlet/outlet hoses to prevent water backflow.
- Carefully disconnect the hoses from the filter bucket.
- Move the filter bucket to a suitable location for cleaning (e.g., a sink or bucket).
- Open the filter bucket and remove the filter media.
- Rinse mechanical filter media (sponges, filter floss) in old aquarium water (from a water change) to preserve beneficial bacteria. Avoid using tap water directly, as chlorine can kill beneficial bacteria.
- Biological filter media (e.g., biochemical balls) should only be gently rinsed in old aquarium water if heavily clogged, as these house the majority of beneficial bacteria.
- Inspect media for wear and tear. Replace filter sponges or other mechanical media as needed (typically every 1-3 months, depending on tank bioload).
- Reassemble the filter media in the correct order and close the bucket securely.
6.2. Reinstallation
- Reconnect the hoses to the filter bucket, ensuring a tight fit.
- Prime the filter bucket as described in Section 4.3.
- Turn on the external water pump and check for leaks.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Reduced Water Flow | Clogged filter media, kinked hoses, external pump issue. | Clean or replace filter media. Check hoses for kinks or blockages. Inspect and troubleshoot your external water pump. |
| Cloudy Water | Insufficient filtration, new tank syndrome, overfeeding, dirty filter media. | Ensure filter media is clean and correctly installed. Perform partial water changes. Reduce feeding. Allow beneficial bacteria to establish. |
| Water Leakage | Improperly sealed lid, loose hose connections, damaged O-ring. | Ensure lid is securely latched. Tighten all hose connections. Inspect the lid's O-ring for damage and ensure it is properly seated; replace if necessary. |
| Filter Not Priming | Air trapped in the system, insufficient water level for siphoning. | Ensure the filter bucket is below the aquarium water level. Re-prime the filter, ensuring all air is expelled. Check for leaks that might be introducing air. |
8. Warranty and Support
For warranty information, returns, or technical support regarding your SUNSUN EW-602/603/604 Aquarium Filter Bucket, please refer to the specific terms provided by your retailer or contact SUNSUN customer service directly. Keep your proof of purchase for any warranty claims.
