1. Introduction
This manual provides detailed instructions for the safe and efficient use of your PULACO DC 5V USB Mini Submersible Water Pump. This compact and quiet pump is designed for various applications, including pet fountains, small aquariums, fish tanks, tabletop fountains, water gardens, and hydroponic systems. Please read this manual thoroughly before installation and operation.
2. Product Overview
Key Features
- Safety USB Power: Operates on DC 5V 3W USB power, minimizing electrical risk.
- Ultra-Quiet Operation: Engineered for low noise output, providing a quiet environment.
- Adjustable Flow Rate: Features an adjusting knob to control water flow up to 50 GPH (Gallons Per Hour).
- Compact Design: Small dimensions (1.5 x 1.5 x 1.1 inches) for versatile placement.
- Detachable & Cleanable: Easy to disassemble without tools for convenient cleaning.
- Accessories Included: Comes with 2 suction cups, one nozzle, and 3.3 feet of tubing.
Components
The PULACO Mini Submersible Water Pump package includes:
- PULACO DC 5V USB Mini Submersible Water Pump
- USB Power Cord (approximately 4.9 ft / 1.5 m)
- Tubing (approximately 3.3 ft / 1 m, 0.3 inch diameter)
- Nozzle (0.3 inch diameter)
- 2 Suction Cups

Image 1: The PULACO DC 5V USB Mini Submersible Water Pump, shown with its included tubing and USB power cable.

Image 2: An exploded view illustrating the detachable components of the pump for easy cleaning, alongside the USB power cord and its length specification.
3. Setup Instructions
3.1 Assembly
- Ensure the pump is clean and free of debris.
- Attach the provided nozzle to the pump's outlet.
- Connect one end of the tubing to the nozzle.
- If desired, attach the suction cups to the bottom of the pump for secure placement.
3.2 Placement
Place the assembled pump completely submerged in water within your pet fountain, aquarium, or other water feature. Ensure the water level is sufficient to cover the pump entirely to prevent dry running, which can damage the motor.

Image 3: The compact size of the PULACO pump demonstrated by being held in a hand, accompanied by a table of its key specifications.
3.3 Power Connection
Connect the USB power cord to a compatible DC 5V USB power source. This can include:
- USB wall adapter (e.g., phone charger)
- Power bank
- Computer USB port
- USB power strip

Image 4: The PULACO pump connected to its USB cable, with examples of compatible 5V USB power transformers such as wall adapters and power strips.
4. Operating Instructions
4.1 Powering On
Once the pump is fully submerged and connected to a power source, it will begin operating. There is no separate on/off switch; operation is controlled by connecting or disconnecting the USB power.
4.2 Adjusting Flow Rate
The pump features an adjustable knob located on its side. Rotate this knob to increase or decrease the water flow rate according to your application's requirements. The maximum flow rate is 50 GPH, and it can elevate water up to 2.0 feet.

Image 5: A visual representation of the PULACO pump's versatility, showing its use in aquariums, pet fountains, and various water features.
5. Maintenance
5.1 Cleaning the Pump
Regular cleaning is essential to maintain the pump's performance and longevity. The pump is designed for easy disassembly without tools.
- Disconnect the pump from its power source.
- Remove the pump from the water.
- Gently detach the front cover and impeller assembly. Refer to Image 2 for guidance on detachable parts.
- Rinse all components under clean water to remove any accumulated debris, algae, or mineral deposits. A small brush may be used for stubborn residue.
- Inspect the impeller for any damage or wear.
- Reassemble the pump, ensuring all parts fit securely.
- Place the pump back into the water and reconnect power.
Note: The frequency of cleaning depends on the water quality and usage environment. For continuous operation, weekly or bi-weekly cleaning is recommended.
6. Troubleshooting
If you encounter issues with your PULACO water pump, please refer to the following table for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump not operating | No power supply Impeller blocked Insufficient water level | Check USB connection and power source Clean impeller and pump housing Ensure pump is fully submerged |
| Low water flow | Impeller partially blocked Tubing kinked or clogged Flow rate knob set too low | Clean impeller and pump Check and clear tubing Adjust flow rate knob to a higher setting |
| Excessive noise | Impeller obstructed Pump not fully submerged Vibration against hard surface | Clean impeller and pump Ensure pump is fully submerged Adjust pump position or use suction cups for stability |
| Pump stops intermittently | Overheating due to low water Loose power connection | Ensure adequate water level Secure USB power connection |
7. Technical Specifications
| Specification | Detail |
|---|---|
| Model Number | FR-PPU12-150 |
| Brand | PULACO |
| Power Source | DC 5V USB |
| Wattage | 3 Watts |
| Voltage | 5 Volts (DC) |
| Maximum Flow Rate | 50 GPH (Gallons Per Hour) / 0.83 GPM |
| Maximum Lifting Height | 2.0 Feet |
| Product Dimensions (L x W x H) | 1.5" x 1.5" x 1.1" |
| Item Weight | 0.28 Pounds (approx. 4.5 ounces) |
| Material | Plastic |
| Color | Black |
| Tubing Diameter | 0.3 inches |
| USB Cable Length | 4.9 feet (1.5 meters) |
8. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact PULACO customer service directly. Keep your purchase receipt as proof of purchase.





