Order processing time: 3–5 business days
Experience powerful, quiet, and customizable aquarium water circulation with the Hygger DC Pump HG915, an adjustable DC water pump designed for freshwater aquariums, saltwater aquariums, sump filtration systems, ponds, fountains, and decorative water features. Featuring an energy-efficient brushless motor, intelligent digital controller, adjustable flow settings, and automatic safety protection, this versatile pump provides reliable water movement for a wide range of aquatic applications.
Available in six models ranging from 25W to 80W, the Hygger HG915 delivers maximum flow rates from 800 GPH to 2,650 GPH. Its magnetic-drive motor and ceramic shaft are designed for smooth, quiet operation, while the external controller provides 71 adjustable speed settings for precise water flow management.
Suitable for both submersible and compatible external inline installations, the Hygger HG915 offers a flexible solution for aquarium return pumps, sump filtration, water circulation, and water features. With automatic dry-run protection, a 10-minute feeding pause, memory function, and interchangeable intake screens, this DC pump combines convenience, performance, and dependable operation.
Benefits of the Hygger DC Pump HG915
Powerful Adjustable Water Flow: Available in six models with maximum flow rates from 800 GPH to 2,650 GPH.
Energy-Efficient DC Motor: Uses a 24V brushless magnetic-drive motor designed for efficient operation.
71 Adjustable Speed Settings: Customize water flow from approximately 30% to 100%.
Ultra-Quiet Operation: Advanced motor technology and a ceramic shaft help reduce vibration and operating noise.
Submersible or External Installation: Suitable for underwater use or compatible external inline plumbing.
Intelligent Digital Controller: Features an LED display for convenient adjustments and pump monitoring.
Automatic Dry-Run Protection: Helps protect the motor when insufficient water is detected.
10-Minute Feeding Mode: Temporarily pauses circulation during fish feeding.
Memory Function: Restores the previous operating setting after a power interruption.
Two Interchangeable Intake Screens: Includes standard and low-water intake options.
Low-Water Operation: Special intake design supports operation in water depths as low as approximately 0.8 inches.
Durable Ceramic Shaft: Supports smooth motor operation and long-term performance.
Controller Lock Function: Helps prevent accidental changes to pump settings.
Freshwater and Saltwater Compatibility: Suitable for a variety of aquarium environments.
Multiple Pump Sizes: Choose the appropriate model based on water flow and pumping height requirements.
Powerful Water Circulation for Aquariums
The Hygger HG915 is designed to provide consistent water movement for aquariums and other aquatic systems requiring dependable circulation.
Proper water circulation plays an important role in aquarium maintenance by helping transport water through filtration equipment and distribute heat, nutrients, and dissolved gases.
In aquariums with sump filtration systems, the return pump transports filtered water from the sump back into the main display tank.
The Hygger HG915 provides adjustable water flow, allowing aquarium owners to balance the return rate with their aquarium's overflow and filtration system.
Its multiple wattage options make it easier to select a pump according to aquarium size, plumbing configuration, and required head height.
Whether you're installing a new aquarium sump or replacing an existing return pump, the HG915 offers flexible water circulation with convenient electronic control.
Available HG915 Pump Models and Performance
The Hygger HG915 series is available in six configurations to accommodate different aquarium and water circulation requirements.
HG915-3000 – 25W
Power: 25W
Maximum Flow Rate: 800 GPH / 3,000 L/H
Maximum Head Height: 9.8 ft / 3 m
Approximate Dimensions: 6.2 × 3.1 × 5 inches
Approximate Weight: 1.53 kg
The HG915-3000 is the smallest model in the series, providing adjustable water circulation for compatible aquarium sump systems and smaller water features.
HG915-4000 – 33W
Power: 33W
Maximum Flow Rate: 1,060 GPH / 4,000 L/H
Maximum Head Height: 13.1 ft / 4 m
Approximate Dimensions: 6.2 × 3.1 × 5 inches
Approximate Weight: 1.8 kg
The HG915-4000 provides increased water flow and pumping height for compatible aquarium return systems requiring additional circulation capacity.
HG915-5000 – 40W
Power: 40W
Maximum Flow Rate: 1,350 GPH / 5,000 L/H
Maximum Head Height: 13.1 ft / 4 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 2.34 kg
The HG915-5000 offers a balance of power and adjustable performance for medium to large aquarium filtration systems.
HG915-6500 – 55W
Power: 55W
Maximum Flow Rate: 1,720 GPH / 6,500 L/H
Maximum Head Height: 14.8 ft / 4.5 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 2.52 kg
The HG915-6500 is suitable for compatible larger aquarium sump systems, water circulation applications, and decorative water features.
HG915-8000 – 65W
Power: 65W
Maximum Flow Rate: 2,120 GPH / 8,000 L/H
Maximum Head Height: 18 ft / 5.5 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 2.79 kg
The HG915-8000 provides strong circulation for larger aquarium installations and systems requiring higher pumping capacity.
HG915-10000 – 80W
Power: 80W
Maximum Flow Rate: 2,650 GPH / 10,000 L/H
Maximum Head Height: 19.7 ft / 6 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 3.6 kg
The HG915-10000 is the most powerful model in the series, designed for compatible high-flow aquarium return systems, ponds, and larger water features.
Important: Maximum flow rates and head heights are manufacturer-rated values. Actual water delivery decreases as pumping height, pipe resistance, elbows, valves, and other plumbing restrictions increase.
How to Choose the Right Hygger HG915 Pump
Selecting the correct pump depends on more than aquarium capacity alone.
Important considerations include:
Aquarium and sump water volume
Desired filtration turnover rate
Vertical distance between the pump and return outlet
Plumbing diameter and total pipe length
Number of elbows, valves, and fittings
Additional equipment connected to the return line
Required water flow at the discharge point
A pump with a high maximum flow rating may deliver considerably less water when operating against significant head pressure.
For example, a pump rated at 2,650 GPH will not necessarily deliver that flow when lifting water several feet through narrow plumbing.
Choose a model that provides the required circulation at your system's actual operating height.
71 Adjustable Flow Speed Settings
One of the most useful features of the Hygger HG915 is its digital flow controller.
The controller provides 71 adjustable speed settings, allowing users to regulate pump output from approximately 30% to 100%.
This offers greater flexibility than traditional fixed-speed aquarium pumps.
Precise Flow Adjustment
Use the Up and Down buttons to increase or decrease the pump speed.
This allows aquarium owners to adjust water circulation according to the requirements of their filtration system.
Lower settings may be useful when reduced water movement is required.
Higher settings can be selected when greater circulation is necessary.
The controller makes it easy to fine-tune performance without relying entirely on mechanical flow restriction.
Digital LED Display
The external controller features an LED display that provides information about the pump's operating settings.
The display uses two primary formats:
The controller returns to its power display after a short period without button input.
This provides a convenient way to monitor and adjust pump performance during everyday operation.
Ultra-Quiet Brushless DC Motor
The Hygger HG915 features a brushless magnetic-drive DC motor designed for smooth and quiet operation.
Its advanced motor design helps minimize vibration while maintaining efficient water circulation.
The pump incorporates a durable ceramic shaft that supports smooth impeller movement.
Hygger also describes the HG915 as using sine-wave motor technology to help reduce operating noise.
This makes the pump suitable for indoor aquarium installations where quieter equipment is desirable.
Actual noise levels depend on pump speed, installation method, plumbing vibration, and maintenance condition.
For best performance, ensure the pump is positioned securely and the impeller remains clean.
Submersible and External Inline Installation
The Hygger HG915 supports two installation configurations.
Submersible Installation
The pump can be installed directly inside a compatible aquarium sump, filtration chamber, or water reservoir.
This is a common arrangement for aquarium return pumps.
The pump draws water through its intake and pushes it through connected tubing or plumbing.
Submersible installation is convenient for aquarium owners who prefer to keep the pump inside the sump.
External Inline Installation
The HG915 can also be installed externally in a compatible inline plumbing system.
Water enters the pump through the inlet and exits through the outlet, allowing the pump to circulate water without being submerged.
This installation method can be useful when sump space is limited.
Important: The Hygger HG915 is not a self-priming pump. External installations require a flooded inlet and proper priming before operation. Never allow the pump to run dry.
Two Interchangeable Water Intake Screens
The Hygger HG915 includes two intake screen designs for different applications.
Standard Intake Screen
The standard intake screen is designed for general aquarium and sump circulation.
It helps prevent larger debris from entering the pump.
Low-Water Intake Screen
The special U-shaped intake screen allows the pump to draw water from relatively shallow areas.
Hygger specifies operation in water depths as low as approximately 0.8 inches (2 cm) when the appropriate intake attachment is installed.
This can be useful for compatible water-transfer applications and shallow water reservoirs.
However, the pump must still receive an adequate water supply to avoid dry running.
For aquariums containing small fish or shrimp, additional intake protection may be necessary.
Automatic Dry-Run and Motor Protection
The Hygger HG915 includes built-in safety functions designed to protect the pump during abnormal operating conditions.
These protective functions help detect problems such as:
Insufficient water
Dry running
Blocked impeller
Abnormal input voltage
Controller overheating
When insufficient water is detected, the pump automatically stops to help reduce the risk of damage.
The controller can also display error codes to assist with troubleshooting.
Common Error Codes
Er02 – Controller Overheating
Indicates that the controller may be exposed to excessive heat.
Move the controller to a cooler, well-ventilated location.
Er03 – Pump Running Dry
Indicates insufficient water or a dry-running condition.
Check the water level and ensure the pump intake is properly supplied with water.
Er04 – Impeller Obstruction
Indicates that the impeller may be blocked.
Disconnect power and inspect the pump for debris or mechanical obstructions.
Er05 – Abnormal Input Voltage
Indicates an electrical supply issue.
Confirm that the power adapter and electrical connections meet the manufacturer's requirements.
Automatic protection features help reduce the risk of damage but do not replace proper installation and regular maintenance.
Convenient 10-Minute Feeding Mode
The Hygger HG915 includes a feeding pause function that temporarily stops the pump for 10 minutes.
Press the Pause button on the controller to activate this feature.
This can be useful when feeding aquarium fish or performing certain maintenance tasks.
After the feeding period ends, the pump automatically resumes its previous operating setting.
For aquariums using sump filtration, ensure the sump has enough unused capacity to hold water that drains from the display aquarium when the return pump stops.
Memory Function and Controller Lock
The HG915 includes a memory function that stores the previously selected pump setting.
After a power interruption, the controller is designed to resume operation using the last saved setting when power is restored.
This reduces the need for repeated adjustments.
Controller Lock Function
The controller also includes a lock feature to help prevent accidental setting changes.
Press and hold the Pause button for approximately three seconds to activate the lock.
Repeat the same action to unlock the controller.
This feature is especially useful when the controller is installed inside an aquarium cabinet.
Energy-Efficient 24V DC Operation
The Hygger HG915 operates using a 24V DC motor connected to the supplied power adapter and controller.
The power adapter accepts an input voltage range of AC 100–240V, making the pump suitable for different regional power configurations when supplied with the correct plug.
Its adjustable motor allows users to reduce operating speed when maximum flow is unnecessary.
Lower speeds may also reduce electrical consumption, depending on the selected setting and installation conditions.
The HG915 provides an energy-efficient alternative to many traditional fixed-speed aquarium water pumps.
Suitable Aquarium Applications
The Hygger DC Pump HG915 is suitable for compatible applications, including:
Freshwater aquarium return pumps
Saltwater aquarium return pumps
Reef aquarium sump filtration
Marine aquarium circulation systems
Freshwater sump filtration
Large aquarium water circulation
Aquarium water transfer
Indoor pond circulation
Outdoor pond installations with protected electrical components
Decorative fountains
Waterfalls
Garden water features
Hydroponic water circulation
Aquatic plant systems
Compatible irrigation and water-transfer applications
For outdoor installations, keep the controller, adapter, and electrical connections protected from rain and moisture.
Installation and Usage Guidelines
Choose the correct model: Select the HG915 pump size based on required water flow and head height.
Inspect the equipment: Confirm that the pump, controller, power adapter, intake screens, and fittings are undamaged.
Select the installation method: Choose submersible or compatible external inline installation.
Install the intake screen: Attach the standard or low-water intake screen as required.
Connect the plumbing: Secure compatible tubing or pipe fittings to the pump.
Position the pump: Place it on a stable surface or inside the appropriate sump compartment.
Prime the pump: Ensure the pump chamber and inlet contain water before starting.
Connect the controller: Attach the pump cable to the external digital controller.
Connect the power adapter: Use the supplied adapter and keep external electrical connections dry.
Create a drip loop: Arrange the power cable to prevent water from reaching the electrical outlet.
Start the pump: Connect power and allow water circulation to begin.
Adjust the speed: Use the controller buttons to select the desired flow.
Inspect for leaks: Check plumbing joints, seals, and connections.
Monitor water levels: Confirm stable circulation and appropriate sump water levels.
Perform routine maintenance: Clean the intake screens and impeller as needed.
External Installation Tips
For external inline installation:
Keep the pump inlet continuously supplied with water.
Ensure the pump chamber is fully primed before operation.
Use correctly sized plumbing connections.
Check O-ring placement before starting the pump.
Avoid excessive inlet restrictions.
Secure plumbing to reduce vibration.
Keep the controller and power adapter dry.
Maintenance and Safety Guidelines
Regular maintenance helps preserve the performance and lifespan of the Hygger HG915.
Disconnect electrical power before servicing the pump.
Never intentionally operate the pump without water.
Clean the impeller and intake screens regularly.
Inspect the ceramic shaft and rotor for wear.
Remove debris that could restrict water movement.
Check tubing and plumbing connections for leaks.
Keep the controller and power adapter dry.
Never immerse the external controller.
Ensure adequate ventilation around electrical components.
Avoid operating the pump with a blocked intake.
Do not use the pump to transfer flammable or hazardous liquids.
Confirm the aquarium sump can accommodate water draining during a power outage.
Follow Hygger's installation and operating instructions.
Product Specifications
Brand: Hygger
Product Name: DC Water Pump
Model: HG915 / HG-915
Product Type: Adjustable DC Aquarium Water Pump / Return Pump
Motor Type: Brushless Magnetic-Drive DC Motor
Motor Shaft: Ceramic
Available Power Ratings: 25W, 33W, 40W, 55W, 65W, and 80W
Maximum Flow Rate Range: 800–2,650 GPH
Maximum Head Height Range: 9.8–19.7 feet
Pump Operating Voltage: DC 24V
Power Adapter Input: AC 100–240V, 50/60Hz
Adjustable Speed Settings: 71
Speed Adjustment Range: Approximately 30%–100%
Controller Type: External Digital LED Controller
Operating Modes: Adjustable Continuous Flow and Feeding Pause
Feeding Pause Duration: 10 Minutes
Memory Function: Yes
Controller Lock: Yes
Automatic Dry-Run Protection: Yes
Impeller Obstruction Protection: Yes
Abnormal Voltage Protection: Yes
Intake Screens: Two Interchangeable Designs
Minimum Water Depth with Special Intake: Approximately 0.8 inches / 2 cm
Installation Options: Submersible or External Inline
Water Compatibility: Freshwater and Saltwater
Primary Applications: Aquarium Return Pumps, Sump Filtration, Ponds, Fountains, and Water Features
Specifications are based on Hygger's published HG915 product information. Maximum flow rates and head heights are rated values; actual performance depends on plumbing configuration, installation height, and operating speed.
Package Includes
Connection fittings and accessory configurations may vary by model and production batch. Confirm the appropriate plumbing connectors for your selected pump size.
Powerful, Quiet, and Adjustable Water Circulation
The Hygger DC Pump HG915 is an excellent choice for aquarium owners who need dependable water movement, customizable flow control, and energy-efficient operation.
With six available pump sizes, a 24V brushless motor, 71 adjustable speed settings, automatic dry-run protection, and a convenient digital controller, the HG915 provides flexible performance for freshwater aquariums, marine aquariums, sump systems, ponds, and decorative water features.
Its quiet magnetic-drive motor, submersible or inline installation options, and automatic feeding pause make it a practical choice for both new aquarium installations and existing filtration upgrades.
Order the Hygger HG915 DC Water Pump today and enjoy powerful, efficient, and customizable water circulation for your aquarium or water feature.
Order processing time: 3–5 business days
Experience powerful, quiet, and customizable aquarium water circulation with the Hygger DC Pump HG915, an adjustable DC water pump designed for freshwater aquariums, saltwater aquariums, sump filtration systems, ponds, fountains, and decorative water features. Featuring an energy-efficient brushless motor, intelligent digital controller, adjustable flow settings, and automatic safety protection, this versatile pump provides reliable water movement for a wide range of aquatic applications.
Available in six models ranging from 25W to 80W, the Hygger HG915 delivers maximum flow rates from 800 GPH to 2,650 GPH. Its magnetic-drive motor and ceramic shaft are designed for smooth, quiet operation, while the external controller provides 71 adjustable speed settings for precise water flow management.
Suitable for both submersible and compatible external inline installations, the Hygger HG915 offers a flexible solution for aquarium return pumps, sump filtration, water circulation, and water features. With automatic dry-run protection, a 10-minute feeding pause, memory function, and interchangeable intake screens, this DC pump combines convenience, performance, and dependable operation.
Benefits of the Hygger DC Pump HG915
Powerful Adjustable Water Flow: Available in six models with maximum flow rates from 800 GPH to 2,650 GPH.
Energy-Efficient DC Motor: Uses a 24V brushless magnetic-drive motor designed for efficient operation.
71 Adjustable Speed Settings: Customize water flow from approximately 30% to 100%.
Ultra-Quiet Operation: Advanced motor technology and a ceramic shaft help reduce vibration and operating noise.
Submersible or External Installation: Suitable for underwater use or compatible external inline plumbing.
Intelligent Digital Controller: Features an LED display for convenient adjustments and pump monitoring.
Automatic Dry-Run Protection: Helps protect the motor when insufficient water is detected.
10-Minute Feeding Mode: Temporarily pauses circulation during fish feeding.
Memory Function: Restores the previous operating setting after a power interruption.
Two Interchangeable Intake Screens: Includes standard and low-water intake options.
Low-Water Operation: Special intake design supports operation in water depths as low as approximately 0.8 inches.
Durable Ceramic Shaft: Supports smooth motor operation and long-term performance.
Controller Lock Function: Helps prevent accidental changes to pump settings.
Freshwater and Saltwater Compatibility: Suitable for a variety of aquarium environments.
Multiple Pump Sizes: Choose the appropriate model based on water flow and pumping height requirements.
Powerful Water Circulation for Aquariums
The Hygger HG915 is designed to provide consistent water movement for aquariums and other aquatic systems requiring dependable circulation.
Proper water circulation plays an important role in aquarium maintenance by helping transport water through filtration equipment and distribute heat, nutrients, and dissolved gases.
In aquariums with sump filtration systems, the return pump transports filtered water from the sump back into the main display tank.
The Hygger HG915 provides adjustable water flow, allowing aquarium owners to balance the return rate with their aquarium's overflow and filtration system.
Its multiple wattage options make it easier to select a pump according to aquarium size, plumbing configuration, and required head height.
Whether you're installing a new aquarium sump or replacing an existing return pump, the HG915 offers flexible water circulation with convenient electronic control.
Available HG915 Pump Models and Performance
The Hygger HG915 series is available in six configurations to accommodate different aquarium and water circulation requirements.
HG915-3000 – 25W
Power: 25W
Maximum Flow Rate: 800 GPH / 3,000 L/H
Maximum Head Height: 9.8 ft / 3 m
Approximate Dimensions: 6.2 × 3.1 × 5 inches
Approximate Weight: 1.53 kg
The HG915-3000 is the smallest model in the series, providing adjustable water circulation for compatible aquarium sump systems and smaller water features.
HG915-4000 – 33W
Power: 33W
Maximum Flow Rate: 1,060 GPH / 4,000 L/H
Maximum Head Height: 13.1 ft / 4 m
Approximate Dimensions: 6.2 × 3.1 × 5 inches
Approximate Weight: 1.8 kg
The HG915-4000 provides increased water flow and pumping height for compatible aquarium return systems requiring additional circulation capacity.
HG915-5000 – 40W
Power: 40W
Maximum Flow Rate: 1,350 GPH / 5,000 L/H
Maximum Head Height: 13.1 ft / 4 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 2.34 kg
The HG915-5000 offers a balance of power and adjustable performance for medium to large aquarium filtration systems.
HG915-6500 – 55W
Power: 55W
Maximum Flow Rate: 1,720 GPH / 6,500 L/H
Maximum Head Height: 14.8 ft / 4.5 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 2.52 kg
The HG915-6500 is suitable for compatible larger aquarium sump systems, water circulation applications, and decorative water features.
HG915-8000 – 65W
Power: 65W
Maximum Flow Rate: 2,120 GPH / 8,000 L/H
Maximum Head Height: 18 ft / 5.5 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 2.79 kg
The HG915-8000 provides strong circulation for larger aquarium installations and systems requiring higher pumping capacity.
HG915-10000 – 80W
Power: 80W
Maximum Flow Rate: 2,650 GPH / 10,000 L/H
Maximum Head Height: 19.7 ft / 6 m
Approximate Dimensions: 7.7 × 4.1 × 6.4 inches
Approximate Weight: 3.6 kg
The HG915-10000 is the most powerful model in the series, designed for compatible high-flow aquarium return systems, ponds, and larger water features.
Important: Maximum flow rates and head heights are manufacturer-rated values. Actual water delivery decreases as pumping height, pipe resistance, elbows, valves, and other plumbing restrictions increase.
How to Choose the Right Hygger HG915 Pump
Selecting the correct pump depends on more than aquarium capacity alone.
Important considerations include:
Aquarium and sump water volume
Desired filtration turnover rate
Vertical distance between the pump and return outlet
Plumbing diameter and total pipe length
Number of elbows, valves, and fittings
Additional equipment connected to the return line
Required water flow at the discharge point
A pump with a high maximum flow rating may deliver considerably less water when operating against significant head pressure.
For example, a pump rated at 2,650 GPH will not necessarily deliver that flow when lifting water several feet through narrow plumbing.
Choose a model that provides the required circulation at your system's actual operating height.
71 Adjustable Flow Speed Settings
One of the most useful features of the Hygger HG915 is its digital flow controller.
The controller provides 71 adjustable speed settings, allowing users to regulate pump output from approximately 30% to 100%.
This offers greater flexibility than traditional fixed-speed aquarium pumps.
Precise Flow Adjustment
Use the Up and Down buttons to increase or decrease the pump speed.
This allows aquarium owners to adjust water circulation according to the requirements of their filtration system.
Lower settings may be useful when reduced water movement is required.
Higher settings can be selected when greater circulation is necessary.
The controller makes it easy to fine-tune performance without relying entirely on mechanical flow restriction.
Digital LED Display
The external controller features an LED display that provides information about the pump's operating settings.
The display uses two primary formats:
The controller returns to its power display after a short period without button input.
This provides a convenient way to monitor and adjust pump performance during everyday operation.
Ultra-Quiet Brushless DC Motor
The Hygger HG915 features a brushless magnetic-drive DC motor designed for smooth and quiet operation.
Its advanced motor design helps minimize vibration while maintaining efficient water circulation.
The pump incorporates a durable ceramic shaft that supports smooth impeller movement.
Hygger also describes the HG915 as using sine-wave motor technology to help reduce operating noise.
This makes the pump suitable for indoor aquarium installations where quieter equipment is desirable.
Actual noise levels depend on pump speed, installation method, plumbing vibration, and maintenance condition.
For best performance, ensure the pump is positioned securely and the impeller remains clean.
Submersible and External Inline Installation
The Hygger HG915 supports two installation configurations.
Submersible Installation
The pump can be installed directly inside a compatible aquarium sump, filtration chamber, or water reservoir.
This is a common arrangement for aquarium return pumps.
The pump draws water through its intake and pushes it through connected tubing or plumbing.
Submersible installation is convenient for aquarium owners who prefer to keep the pump inside the sump.
External Inline Installation
The HG915 can also be installed externally in a compatible inline plumbing system.
Water enters the pump through the inlet and exits through the outlet, allowing the pump to circulate water without being submerged.
This installation method can be useful when sump space is limited.
Important: The Hygger HG915 is not a self-priming pump. External installations require a flooded inlet and proper priming before operation. Never allow the pump to run dry.
Two Interchangeable Water Intake Screens
The Hygger HG915 includes two intake screen designs for different applications.
Standard Intake Screen
The standard intake screen is designed for general aquarium and sump circulation.
It helps prevent larger debris from entering the pump.
Low-Water Intake Screen
The special U-shaped intake screen allows the pump to draw water from relatively shallow areas.
Hygger specifies operation in water depths as low as approximately 0.8 inches (2 cm) when the appropriate intake attachment is installed.
This can be useful for compatible water-transfer applications and shallow water reservoirs.
However, the pump must still receive an adequate water supply to avoid dry running.
For aquariums containing small fish or shrimp, additional intake protection may be necessary.
Automatic Dry-Run and Motor Protection
The Hygger HG915 includes built-in safety functions designed to protect the pump during abnormal operating conditions.
These protective functions help detect problems such as:
Insufficient water
Dry running
Blocked impeller
Abnormal input voltage
Controller overheating
When insufficient water is detected, the pump automatically stops to help reduce the risk of damage.
The controller can also display error codes to assist with troubleshooting.
Common Error Codes
Er02 – Controller Overheating
Indicates that the controller may be exposed to excessive heat.
Move the controller to a cooler, well-ventilated location.
Er03 – Pump Running Dry
Indicates insufficient water or a dry-running condition.
Check the water level and ensure the pump intake is properly supplied with water.
Er04 – Impeller Obstruction
Indicates that the impeller may be blocked.
Disconnect power and inspect the pump for debris or mechanical obstructions.
Er05 – Abnormal Input Voltage
Indicates an electrical supply issue.
Confirm that the power adapter and electrical connections meet the manufacturer's requirements.
Automatic protection features help reduce the risk of damage but do not replace proper installation and regular maintenance.
Convenient 10-Minute Feeding Mode
The Hygger HG915 includes a feeding pause function that temporarily stops the pump for 10 minutes.
Press the Pause button on the controller to activate this feature.
This can be useful when feeding aquarium fish or performing certain maintenance tasks.
After the feeding period ends, the pump automatically resumes its previous operating setting.
For aquariums using sump filtration, ensure the sump has enough unused capacity to hold water that drains from the display aquarium when the return pump stops.
Memory Function and Controller Lock
The HG915 includes a memory function that stores the previously selected pump setting.
After a power interruption, the controller is designed to resume operation using the last saved setting when power is restored.
This reduces the need for repeated adjustments.
Controller Lock Function
The controller also includes a lock feature to help prevent accidental setting changes.
Press and hold the Pause button for approximately three seconds to activate the lock.
Repeat the same action to unlock the controller.
This feature is especially useful when the controller is installed inside an aquarium cabinet.
Energy-Efficient 24V DC Operation
The Hygger HG915 operates using a 24V DC motor connected to the supplied power adapter and controller.
The power adapter accepts an input voltage range of AC 100–240V, making the pump suitable for different regional power configurations when supplied with the correct plug.
Its adjustable motor allows users to reduce operating speed when maximum flow is unnecessary.
Lower speeds may also reduce electrical consumption, depending on the selected setting and installation conditions.
The HG915 provides an energy-efficient alternative to many traditional fixed-speed aquarium water pumps.
Suitable Aquarium Applications
The Hygger DC Pump HG915 is suitable for compatible applications, including:
Freshwater aquarium return pumps
Saltwater aquarium return pumps
Reef aquarium sump filtration
Marine aquarium circulation systems
Freshwater sump filtration
Large aquarium water circulation
Aquarium water transfer
Indoor pond circulation
Outdoor pond installations with protected electrical components
Decorative fountains
Waterfalls
Garden water features
Hydroponic water circulation
Aquatic plant systems
Compatible irrigation and water-transfer applications
For outdoor installations, keep the controller, adapter, and electrical connections protected from rain and moisture.
Installation and Usage Guidelines
Choose the correct model: Select the HG915 pump size based on required water flow and head height.
Inspect the equipment: Confirm that the pump, controller, power adapter, intake screens, and fittings are undamaged.
Select the installation method: Choose submersible or compatible external inline installation.
Install the intake screen: Attach the standard or low-water intake screen as required.
Connect the plumbing: Secure compatible tubing or pipe fittings to the pump.
Position the pump: Place it on a stable surface or inside the appropriate sump compartment.
Prime the pump: Ensure the pump chamber and inlet contain water before starting.
Connect the controller: Attach the pump cable to the external digital controller.
Connect the power adapter: Use the supplied adapter and keep external electrical connections dry.
Create a drip loop: Arrange the power cable to prevent water from reaching the electrical outlet.
Start the pump: Connect power and allow water circulation to begin.
Adjust the speed: Use the controller buttons to select the desired flow.
Inspect for leaks: Check plumbing joints, seals, and connections.
Monitor water levels: Confirm stable circulation and appropriate sump water levels.
Perform routine maintenance: Clean the intake screens and impeller as needed.
External Installation Tips
For external inline installation:
Keep the pump inlet continuously supplied with water.
Ensure the pump chamber is fully primed before operation.
Use correctly sized plumbing connections.
Check O-ring placement before starting the pump.
Avoid excessive inlet restrictions.
Secure plumbing to reduce vibration.
Keep the controller and power adapter dry.
Maintenance and Safety Guidelines
Regular maintenance helps preserve the performance and lifespan of the Hygger HG915.
Disconnect electrical power before servicing the pump.
Never intentionally operate the pump without water.
Clean the impeller and intake screens regularly.
Inspect the ceramic shaft and rotor for wear.
Remove debris that could restrict water movement.
Check tubing and plumbing connections for leaks.
Keep the controller and power adapter dry.
Never immerse the external controller.
Ensure adequate ventilation around electrical components.
Avoid operating the pump with a blocked intake.
Do not use the pump to transfer flammable or hazardous liquids.
Confirm the aquarium sump can accommodate water draining during a power outage.
Follow Hygger's installation and operating instructions.
Product Specifications
Brand: Hygger
Product Name: DC Water Pump
Model: HG915 / HG-915
Product Type: Adjustable DC Aquarium Water Pump / Return Pump
Motor Type: Brushless Magnetic-Drive DC Motor
Motor Shaft: Ceramic
Available Power Ratings: 25W, 33W, 40W, 55W, 65W, and 80W
Maximum Flow Rate Range: 800–2,650 GPH
Maximum Head Height Range: 9.8–19.7 feet
Pump Operating Voltage: DC 24V
Power Adapter Input: AC 100–240V, 50/60Hz
Adjustable Speed Settings: 71
Speed Adjustment Range: Approximately 30%–100%
Controller Type: External Digital LED Controller
Operating Modes: Adjustable Continuous Flow and Feeding Pause
Feeding Pause Duration: 10 Minutes
Memory Function: Yes
Controller Lock: Yes
Automatic Dry-Run Protection: Yes
Impeller Obstruction Protection: Yes
Abnormal Voltage Protection: Yes
Intake Screens: Two Interchangeable Designs
Minimum Water Depth with Special Intake: Approximately 0.8 inches / 2 cm
Installation Options: Submersible or External Inline
Water Compatibility: Freshwater and Saltwater
Primary Applications: Aquarium Return Pumps, Sump Filtration, Ponds, Fountains, and Water Features
Specifications are based on Hygger's published HG915 product information. Maximum flow rates and head heights are rated values; actual performance depends on plumbing configuration, installation height, and operating speed.
Package Includes
Connection fittings and accessory configurations may vary by model and production batch. Confirm the appropriate plumbing connectors for your selected pump size.
Powerful, Quiet, and Adjustable Water Circulation
The Hygger DC Pump HG915 is an excellent choice for aquarium owners who need dependable water movement, customizable flow control, and energy-efficient operation.
With six available pump sizes, a 24V brushless motor, 71 adjustable speed settings, automatic dry-run protection, and a convenient digital controller, the HG915 provides flexible performance for freshwater aquariums, marine aquariums, sump systems, ponds, and decorative water features.
Its quiet magnetic-drive motor, submersible or inline installation options, and automatic feeding pause make it a practical choice for both new aquarium installations and existing filtration upgrades.
Order the Hygger HG915 DC Water Pump today and enjoy powerful, efficient, and customizable water circulation for your aquarium or water feature.
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