Introduction
This manual provides detailed instructions for the proper setup, operation, and maintenance of your HITOP 5W Adjustable Aquarium Air Pump. Designed for aquariums up to 180 gallons, this air pump delivers essential oxygenation to your aquatic environment. Please read these instructions carefully before use to ensure optimal performance and longevity of your product.
Product Features
- Powerful Aeration: 5W motor with 2 outlets, providing a maximum air volume of 100 GPH (gallons per hour), suitable for tanks up to 180 gallons.
- Adjustable Air Volume: Features an easy-to-rotate knob for precise control over air output, allowing customization for various aquarium needs.
- Quiet Operation: Engineered with multiple silent design elements, including soft rubber feet for shock absorption and thickened shell with wrapped joints to minimize noise.
- Deep Water Performance: Strong air pressure of 18 kPa ensures effective air delivery even in deeper water setups.
- Complete Accessory Kit: Includes all necessary components for immediate setup.
Package Contents
Your HITOP Aquarium Air Pump package includes the following items:
- 1 x HITOP 5W Aquarium Air Pump
- 2 x 5ft-long Soft Air Tubes
- 2 x Air Stones
- 2 x Check Valves
- 2 x Suction Cups for tube fixing
- 1 x T-connector (2 in 1 transverter)
- 2 x Spare Regulating Valves
- 1 x Spare Dustproof Cotton

Setup Instructions
- Placement: Position the air pump above the water level of your aquarium to prevent water backflow. If placing below water level, a check valve is essential.
- Connect Air Tubes: Attach one end of the air tube to each outlet of the air pump.
- Install Air Stones: Connect the other end of each air tube to an air stone.
- Submerge Air Stones: Place the air stones at the desired location within your aquarium.
- Install Check Valves (Crucial for Safety): If the air pump is placed below the water level, cut the air tube and insert a check valve in the line between the pump and the air stone. Ensure the check valve is oriented correctly to allow air flow towards the aquarium and prevent water backflow into the pump.
- Optional: Regulating Valves and T-connector: Use the regulating valves to fine-tune air flow to individual air stones. The T-connector can be used to combine two air lines into one or split one line into two, if needed for specific setups.
- Secure Tubing: Use the provided suction cups to secure the air tubes along the back or sides of your aquarium, keeping them tidy and preventing kinks.


Operating Instructions
- Power On: Once all connections are secure and the air stones are submerged, plug the air pump into a suitable power outlet. The pump will begin operating immediately.
- Adjust Air Volume: Locate the adjustment knob on the top of the air pump. Rotate the knob clockwise to increase air output and counter-clockwise to decrease it. Adjust to achieve the desired bubble intensity for your aquarium.
- Monitoring: Regularly observe the air flow to ensure consistent bubble production and proper aeration.

Maintenance
- Air Stone Cleaning: Over time, air stones can become clogged, reducing air flow. Clean or replace air stones regularly (e.g., monthly) to maintain optimal performance.
- Air Tube Inspection: Check air tubes periodically for kinks, cracks, or blockages. Replace damaged tubing as needed.
- Pump Exterior: Wipe the exterior of the pump with a dry cloth to remove dust. Do not immerse the pump in water.
- Internal Filter (if applicable): Some air pumps have internal filters. Refer to the product diagram for your specific model to check if it has a replaceable filter and how to access it for cleaning or replacement.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No air output or weak air flow |
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| Pump is noisy |
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| Water backflow into pump |
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Specifications

| Specification | Value (5W Model) |
|---|---|
| Power | 5W |
| Voltage | 110-120V / 60Hz |
| Size (L x W x H) | 5.3 x 2.9 x 3.1 inches (13.5 x 7.5 x 8 cm) |
| Suitable for Tank Size | Up to 180 gallons |
| Max Pressure | 18 kPa |
| Max Air Volume | 100 GPH (2 * 3L/min) |
| Color | White, Green |
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official HITOP website. Keep your purchase receipt as proof of purchase for any warranty claims.