Order processing time: 3–5 business days
Bring vibrant colors and customizable illumination to your freshwater aquarium with the Hygger 24/7 Mode Auto On Off LED Light HG999 – 18W. Designed for aquariums measuring 18–24 inches, this programmable full-spectrum LED aquarium light features automatic on/off scheduling, adjustable brightness, customizable colors, and a convenient LCD controller.
Equipped with 98 high-quality LED chips and delivering approximately 1,120 lumens, the Hygger HG999 18W combines white, red, green, and blue LEDs to enhance fish coloration and provide useful illumination for freshwater aquatic plants. Its programmable lighting modes allow you to create natural-looking daylight and moonlight transitions while maintaining a consistent daily lighting schedule.
Whether you're upgrading your freshwater aquarium lighting, setting up a planted tank, or looking for an automatic LED light with advanced programming options, the Hygger HG999 18W offers a versatile and convenient solution.
18W Full-Spectrum LED Lighting: Provides efficient illumination for compatible freshwater aquariums and planted tanks.
Designed for 18–24 Inch Aquariums: Features extendable metal mounting brackets for a secure fit on suitable tanks.
98 LED Chips: Delivers bright, balanced lighting to highlight fish colors and aquatic plants.
Approximately 1,120 Lumens: Offers effective illumination for compatible freshwater aquarium setups.
Automatic On/Off Function: Follows programmed daily lighting schedules without requiring manual switching.
Three Programmable Lighting Modes: Includes Day Mode, Night Mode, and DIY Mode.
Eight Customizable Lighting Periods: Allows users to personalize lighting colors, brightness, and timing throughout the day.
Adjustable Brightness: Provides convenient intensity control for different aquarium lighting requirements.
LCD Controller: Displays time, lighting mode, brightness, and other settings for easy programming.
Gradual Lighting Transitions: Features approximately 15-minute fade-in and fade-out effects.
IP68-Rated LED Housing: Features sealed, water-resistant construction to help protect against aquarium moisture.
Power-Off Memory: Retains programmed lighting settings after an interruption in electrical power.
The Hygger HG999 18W LED Aquarium Light is designed to provide full-spectrum illumination for freshwater fish and suitable aquatic plants.
Its combination of white, red, green, and blue LEDs produces balanced lighting that helps enhance the natural appearance of fish, plants, and aquarium decorations.
The full-spectrum output also provides useful wavelengths for photosynthesis in compatible freshwater plants.
With approximately 1,120 lumens of illumination, the 18W model offers increased light output compared with the smaller HG999 14W version.
Actual plant growth depends on several factors, including aquarium depth, lighting duration, nutrients, carbon dioxide availability, and individual plant requirements.
The Hygger HG999 features three customizable lighting modes that allow aquarium owners to create a suitable lighting schedule.
Day Mode provides full-spectrum daylight illumination with adjustable brightness.
Users can program the lighting start and end times and select the preferred intensity.
The light gradually brightens and dims over approximately 15 minutes, helping create smoother transitions between illuminated and dark periods.
Night Mode allows users to select from seven decorative lighting colors:
Red
Orange
Yellow
Green
Cyan
Blue
Purple
This mode is useful for highlighting aquarium decorations and creating an attractive evening display.
For healthy fish behavior, nighttime lighting should be limited appropriately to allow a regular period of darkness.
DIY Mode provides advanced lighting customization through eight programmable time periods, identified as L1–L8.
Each period can be configured with its own lighting duration, color balance, and brightness.
Users can adjust the white, red, green, and blue lighting channels to create a personalized 24-hour lighting schedule.
This feature is especially useful for planted aquarium owners who want greater control over daily illumination.
The Hygger HG999 18W includes a wired LCD controller with six setting buttons for convenient operation.
The display allows users to monitor and adjust:
Local time
Selected lighting mode
Lighting start and end times
Brightness settings
Light colors
Customizable DIY lighting periods
Once programmed, the aquarium light automatically follows the selected schedule each day.
The built-in memory function retains saved lighting programs during power interruptions. However, the local clock must be reset after power is restored.
The Hygger HG999 features a slim aluminum housing designed to dissipate heat efficiently without requiring a cooling fan.
Its fully sealed LED housing carries an IP68 water-resistance rating, helping protect the lighting unit against splashes and aquarium moisture.
The extendable metal mounting brackets allow the 18W model to fit compatible aquariums measuring 18–24 inches in length.
The fixture should be installed above the aquarium according to the manufacturer's instructions, with the controller and electrical connections kept dry.
The Hygger HG999 18W LED Light is suitable for compatible aquarium setups, including:
Freshwater aquariums measuring 18–24 inches
Planted freshwater aquariums
Tropical community fish tanks
Betta and other freshwater fish displays
Aquascaped freshwater aquariums
Low- to moderate-light aquatic plant setups
Freshwater tanks requiring automatic daily lighting schedules
Decorative freshwater aquarium displays
This light is designed primarily for freshwater applications and is not intended as specialized high-intensity coral reef lighting.
Attach the included extendable metal mounting brackets to the LED light fixture.
Position the light securely across a compatible 18–24 inch aquarium.
Connect the wired LCD controller and included power adapter.
Set the correct local time using the controller.
Select Day Mode, Night Mode, or DIY Mode.
Adjust the lighting schedule, brightness, and color settings according to your aquarium's needs.
Allow the light to operate automatically according to the programmed schedule.
Observe fish and plant responses and adjust the lighting intensity or duration when necessary.
Aquarium Lighting Tip: Begin with a consistent, moderate daily lighting period and adjust gradually based on plant growth and algae development. Avoid excessive lighting durations that may encourage unwanted algae growth.
Maintenance Tip: Periodically wipe the light housing to remove dust, water spots, and mineral deposits. Always disconnect electrical power before cleaning.
Important Safety Information: Although the LED housing is IP68-rated, the power adapter and controller must be kept dry. Do not intentionally submerge the complete lighting system.
Brand: Hygger
Product: 24/7 Mode Auto On Off LED Light
Model: HG999-18W
Power Rating: 18W
Recommended Aquarium Length: 18–24 inches
Light Fixture Length: 18 inches
LED Quantity: 98
Lighting Type: Full-Spectrum WRGB LED
LED Colors: White, Red, Green, and Blue
Luminous Output: Approximately 1,120 lumens
Lighting Modes: Day Mode, Night Mode, and DIY Mode
DIY Programming: Up to 8 customizable lighting periods
Brightness Control: Adjustable from 10% to 100%
Lighting Transitions: Approximately 15-minute gradual fade
Controller: Wired LCD controller with six setting buttons
Automatic Timer: Programmable daily on/off schedules
Memory Function: Retains programmed settings after power interruptions
Water-Resistance Rating: IP68 LED housing
Housing Material: Aluminum
Mounting: Extendable metal brackets
Power Input: AC 100–240V
Adapter Output: DC 20V
Power Cord Length: Approximately 4.9 ft + 2.3 ft
Recommended Water Type: Freshwater
Primary Applications: Freshwater fish tanks and compatible planted aquariums
Specifications are based on Hygger's published HG999 product information and user manual. Actual lighting performance depends on aquarium dimensions, mounting position, operating settings, and plant requirements.
1 × Hygger HG999 18W LED Aquarium Light
1 × AC/DC Power Adapter
2 × Extendable Metal Mounting Brackets
1 × User Manual
The Hygger 24/7 Mode Auto On Off LED Light HG999 – 18W is a practical choice for freshwater aquarium owners who want vibrant illumination, convenient automatic scheduling, and customizable lighting controls.
With its 98 full-spectrum LED chips, approximately 1,120-lumen output, three programmable lighting modes, eight DIY lighting periods, LCD controller, and adjustable mounting brackets, this versatile aquarium light makes it easy to create an attractive and consistent lighting environment.
Order the Hygger HG999 18W Auto On Off LED Aquarium Light today and enjoy colorful freshwater aquarium illumination with convenient programmable control.
Order processing time: 3–5 business days
Bring vibrant colors and customizable illumination to your freshwater aquarium with the Hygger 24/7 Mode Auto On Off LED Light HG999 – 18W. Designed for aquariums measuring 18–24 inches, this programmable full-spectrum LED aquarium light features automatic on/off scheduling, adjustable brightness, customizable colors, and a convenient LCD controller.
Equipped with 98 high-quality LED chips and delivering approximately 1,120 lumens, the Hygger HG999 18W combines white, red, green, and blue LEDs to enhance fish coloration and provide useful illumination for freshwater aquatic plants. Its programmable lighting modes allow you to create natural-looking daylight and moonlight transitions while maintaining a consistent daily lighting schedule.
Whether you're upgrading your freshwater aquarium lighting, setting up a planted tank, or looking for an automatic LED light with advanced programming options, the Hygger HG999 18W offers a versatile and convenient solution.
18W Full-Spectrum LED Lighting: Provides efficient illumination for compatible freshwater aquariums and planted tanks.
Designed for 18–24 Inch Aquariums: Features extendable metal mounting brackets for a secure fit on suitable tanks.
98 LED Chips: Delivers bright, balanced lighting to highlight fish colors and aquatic plants.
Approximately 1,120 Lumens: Offers effective illumination for compatible freshwater aquarium setups.
Automatic On/Off Function: Follows programmed daily lighting schedules without requiring manual switching.
Three Programmable Lighting Modes: Includes Day Mode, Night Mode, and DIY Mode.
Eight Customizable Lighting Periods: Allows users to personalize lighting colors, brightness, and timing throughout the day.
Adjustable Brightness: Provides convenient intensity control for different aquarium lighting requirements.
LCD Controller: Displays time, lighting mode, brightness, and other settings for easy programming.
Gradual Lighting Transitions: Features approximately 15-minute fade-in and fade-out effects.
IP68-Rated LED Housing: Features sealed, water-resistant construction to help protect against aquarium moisture.
Power-Off Memory: Retains programmed lighting settings after an interruption in electrical power.
The Hygger HG999 18W LED Aquarium Light is designed to provide full-spectrum illumination for freshwater fish and suitable aquatic plants.
Its combination of white, red, green, and blue LEDs produces balanced lighting that helps enhance the natural appearance of fish, plants, and aquarium decorations.
The full-spectrum output also provides useful wavelengths for photosynthesis in compatible freshwater plants.
With approximately 1,120 lumens of illumination, the 18W model offers increased light output compared with the smaller HG999 14W version.
Actual plant growth depends on several factors, including aquarium depth, lighting duration, nutrients, carbon dioxide availability, and individual plant requirements.
The Hygger HG999 features three customizable lighting modes that allow aquarium owners to create a suitable lighting schedule.
Day Mode provides full-spectrum daylight illumination with adjustable brightness.
Users can program the lighting start and end times and select the preferred intensity.
The light gradually brightens and dims over approximately 15 minutes, helping create smoother transitions between illuminated and dark periods.
Night Mode allows users to select from seven decorative lighting colors:
Red
Orange
Yellow
Green
Cyan
Blue
Purple
This mode is useful for highlighting aquarium decorations and creating an attractive evening display.
For healthy fish behavior, nighttime lighting should be limited appropriately to allow a regular period of darkness.
DIY Mode provides advanced lighting customization through eight programmable time periods, identified as L1–L8.
Each period can be configured with its own lighting duration, color balance, and brightness.
Users can adjust the white, red, green, and blue lighting channels to create a personalized 24-hour lighting schedule.
This feature is especially useful for planted aquarium owners who want greater control over daily illumination.
The Hygger HG999 18W includes a wired LCD controller with six setting buttons for convenient operation.
The display allows users to monitor and adjust:
Local time
Selected lighting mode
Lighting start and end times
Brightness settings
Light colors
Customizable DIY lighting periods
Once programmed, the aquarium light automatically follows the selected schedule each day.
The built-in memory function retains saved lighting programs during power interruptions. However, the local clock must be reset after power is restored.
The Hygger HG999 features a slim aluminum housing designed to dissipate heat efficiently without requiring a cooling fan.
Its fully sealed LED housing carries an IP68 water-resistance rating, helping protect the lighting unit against splashes and aquarium moisture.
The extendable metal mounting brackets allow the 18W model to fit compatible aquariums measuring 18–24 inches in length.
The fixture should be installed above the aquarium according to the manufacturer's instructions, with the controller and electrical connections kept dry.
The Hygger HG999 18W LED Light is suitable for compatible aquarium setups, including:
Freshwater aquariums measuring 18–24 inches
Planted freshwater aquariums
Tropical community fish tanks
Betta and other freshwater fish displays
Aquascaped freshwater aquariums
Low- to moderate-light aquatic plant setups
Freshwater tanks requiring automatic daily lighting schedules
Decorative freshwater aquarium displays
This light is designed primarily for freshwater applications and is not intended as specialized high-intensity coral reef lighting.
Attach the included extendable metal mounting brackets to the LED light fixture.
Position the light securely across a compatible 18–24 inch aquarium.
Connect the wired LCD controller and included power adapter.
Set the correct local time using the controller.
Select Day Mode, Night Mode, or DIY Mode.
Adjust the lighting schedule, brightness, and color settings according to your aquarium's needs.
Allow the light to operate automatically according to the programmed schedule.
Observe fish and plant responses and adjust the lighting intensity or duration when necessary.
Aquarium Lighting Tip: Begin with a consistent, moderate daily lighting period and adjust gradually based on plant growth and algae development. Avoid excessive lighting durations that may encourage unwanted algae growth.
Maintenance Tip: Periodically wipe the light housing to remove dust, water spots, and mineral deposits. Always disconnect electrical power before cleaning.
Important Safety Information: Although the LED housing is IP68-rated, the power adapter and controller must be kept dry. Do not intentionally submerge the complete lighting system.
Brand: Hygger
Product: 24/7 Mode Auto On Off LED Light
Model: HG999-18W
Power Rating: 18W
Recommended Aquarium Length: 18–24 inches
Light Fixture Length: 18 inches
LED Quantity: 98
Lighting Type: Full-Spectrum WRGB LED
LED Colors: White, Red, Green, and Blue
Luminous Output: Approximately 1,120 lumens
Lighting Modes: Day Mode, Night Mode, and DIY Mode
DIY Programming: Up to 8 customizable lighting periods
Brightness Control: Adjustable from 10% to 100%
Lighting Transitions: Approximately 15-minute gradual fade
Controller: Wired LCD controller with six setting buttons
Automatic Timer: Programmable daily on/off schedules
Memory Function: Retains programmed settings after power interruptions
Water-Resistance Rating: IP68 LED housing
Housing Material: Aluminum
Mounting: Extendable metal brackets
Power Input: AC 100–240V
Adapter Output: DC 20V
Power Cord Length: Approximately 4.9 ft + 2.3 ft
Recommended Water Type: Freshwater
Primary Applications: Freshwater fish tanks and compatible planted aquariums
Specifications are based on Hygger's published HG999 product information and user manual. Actual lighting performance depends on aquarium dimensions, mounting position, operating settings, and plant requirements.
1 × Hygger HG999 18W LED Aquarium Light
1 × AC/DC Power Adapter
2 × Extendable Metal Mounting Brackets
1 × User Manual
The Hygger 24/7 Mode Auto On Off LED Light HG999 – 18W is a practical choice for freshwater aquarium owners who want vibrant illumination, convenient automatic scheduling, and customizable lighting controls.
With its 98 full-spectrum LED chips, approximately 1,120-lumen output, three programmable lighting modes, eight DIY lighting periods, LCD controller, and adjustable mounting brackets, this versatile aquarium light makes it easy to create an attractive and consistent lighting environment.
Order the Hygger HG999 18W Auto On Off LED Aquarium Light today and enjoy colorful freshwater aquarium illumination with convenient programmable control.
