SongLong 400GPH
SongLong Submersible Pump 400GPH User Manual
Model: 400GPH
Introduction
Thank you for choosing the SongLong 400GPH Submersible Pump. This pump is designed for various aquatic applications, offering efficient and reliable performance with its ultra-quiet operation and overheating protection. Please read this manual thoroughly before installation and operation to ensure proper use and maintenance.
Applications
The SongLong 400GPH Submersible Pump is versatile and suitable for a wide range of water circulation needs, including:
- Fountains: Ideal for creating beautiful water features in gardens or indoor spaces.
- Hydroponics: Efficiently circulates nutrient solutions in hydroponic growing systems.
- Ponds: Helps maintain water circulation and aeration in small to medium-sized ponds.
- Aquariums: Provides necessary water movement for healthy aquatic environments.
- Rockery: Suitable for water flow in decorative rockeries and waterfalls.

Image: A visual guide illustrating the diverse applications of the SongLong submersible pump, such as in fountains, hydroponic setups, ponds, rockeries, and aquariums.
Safety Information
- Always disconnect the power supply before handling, installing, or performing maintenance on the pump.
- Ensure the pump is fully submerged in water during operation to prevent overheating and damage.
- Do not operate the pump with a damaged power cord or plug. If damaged, contact qualified personnel for repair or replacement.
- This pump is designed for fresh or saltwater applications only. Do not use with flammable or corrosive liquids.
- Keep out of reach of children.
- Ensure the voltage and frequency of the power supply match the pump's specifications (110 Volts, 60Hz).
Package Contents
Please verify that all items listed below are included in your package:
- 1 x SongLong 400GPH Submersible Pump
- 3 x Nozzles (0.51 inch/13mm, 0.62 inch/16mm, 0.75 inch/19mm)

Image: The SongLong 400GPH Submersible Pump, showing the main pump unit, its attached power cord, and the three included threaded nozzles of varying sizes.
Setup
- Choose a Nozzle: Select the appropriate nozzle size (0.51 inch/13mm, 0.62 inch/16mm, or 0.75 inch/19mm) based on your desired water flow and application. Thread the chosen nozzle securely onto the pump's outlet.
- Position the Pump: Place the pump in the desired location within your fountain, pond, or aquarium. The pump features 4 strong suction cups on its base to help secure it firmly to a smooth surface, either vertically or horizontally. Ensure the pump is fully submerged in water.
- Connect Power: Route the 6-foot power cord safely to a grounded electrical outlet. Ensure there are no kinks or damage to the cord. Do not plug in the pump until it is fully submerged.

Image: A visual representation of the three interchangeable nozzles (0.51 inch, 0.62 inch, 0.75 inch) and the pump's 6-foot long power cord, highlighting their features for easy installation.
Operating Instructions
- Power On: Once the pump is correctly positioned and fully submerged, plug the power cord into a suitable electrical outlet. The pump will begin to operate.
- Adjust Water Flow: The pump is equipped with an adjustable knob to control the water flow rate. Locate the knob on the side of the pump and rotate it to increase or decrease the flow as desired. The maximum flow rate is 400 GPH (1500 L/h) with a maximum lift height of 6.5 feet.

Image: A diagram showing the pump's adjustable flow rate mechanism, indicating the maximum flow rate of 400 GPH (1500 L/h) and a maximum lift height of 6.56 feet (200 cm), along with overheating protection.

Image: A diagram illustrating the ultra-quiet design of the pump, comparing its noise level (30-40dB) to common sounds like ticking (20-40dB) and normal talk (50-60dB), emphasizing its high-quality, ultra-quiet rotor.
Maintenance
Regular maintenance is crucial for the longevity and optimal performance of your pump.
- Cleaning:
- Disconnect the pump from the power supply.
- Remove the pump from the water.
- The pump is designed to be detachable without tools for easy cleaning. Gently separate the components, including the filter cover and impeller.
- Rinse all parts with clean water to remove any debris, algae, or mineral buildup. A soft brush can be used for stubborn deposits.
- Inspect the impeller for any damage or wear.
- Reassemble the pump, ensuring all parts fit securely.
- Winterization (for outdoor use): If using outdoors in freezing temperatures, remove the pump from the water, clean it thoroughly, and store it in a dry, frost-free location.

Image: A diagram highlighting the pump's quality assurance, featuring energy-saving design, secure glue sealing, durable ABS plastic construction, and effective rubber suction cups for stability.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not operate | No power supply; Impeller jammed; Air lock. | Check power connection; Clean impeller; Submerge pump fully and restart. |
| Reduced water flow | Clogged intake/nozzle; Impeller dirty; Flow control knob set too low. | Clean intake and nozzle; Clean impeller; Adjust flow control knob. |
| Pump is noisy | Debris in impeller; Pump not fully submerged; Pump not stable. | Clean impeller; Ensure pump is fully submerged; Secure pump with suction cups. |
| Pump stops intermittently | Overheating protection activated; Low water level. | Check water level and add water if necessary; Allow pump to cool down before restarting. |
Specifications
| Feature | Detail |
|---|---|
| Brand | SongLong |
| Model | 400GPH |
| Material | Plastic |
| Color | Stainless Steel (referring to internal components/finish) |
| Style | Submersible |
| Product Dimensions (L x W x H) | 3.5" x 2.4" x 3.9" |
| Power Source | Corded Electric |
| Item Weight | 16 ounces (1 pound) |
| Maximum Flow Rate | 400 GPH (1500 Liters Per Hour) |
| Maximum Lifting Height | 6.5 Feet |
| Voltage | 110 Volts |
| Wattage | 25 Watts |
| Power Cord Length | 6 Feet |
| Included Components | 1 Pump, 3 Nozzles |

Image: A detailed diagram outlining the physical dimensions and key specifications of the pump, including material, color, power source, flow rate, lift height, and power cord length.
Warranty and Support
For information regarding warranty coverage, technical support, or replacement parts, please refer to the product's original packaging or contact SongLong customer service directly through the retailer where the product was purchased. Keep your purchase receipt as proof of purchase.
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