hygger Custom LED Aquarium Light (Model HG129) Instruction Manual

1. Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your hygger Custom LED Aquarium Light, Model HG129. This light is designed to provide optimal illumination for 24-30 inch freshwater planted tanks, offering customizable lighting cycles including Daylight-Moonlight and 24/7 modes, with adjustable brightness and a full spectrum of 8 colors.

The hygger Custom LED Aquarium Light, Model HG129, positioned above a vibrant freshwater planted tank, showcasing its illumination capabilities. The remote control is visible in the upper right corner.

2. Safety Information

• Always unplug the light fixture from the power outlet before performing any maintenance or cleaning.
• Do not operate the light if the cord or plug is damaged.
• Ensure the light is securely mounted to prevent it from falling into the aquarium.
• This product is designed for indoor use only.
• Keep the power adapter and controller away from water.
• The light fixture is waterproof, but the controller and power adapter are not.
• The remote control contains a button cell battery. Keep out of reach of children. If swallowed, seek immediate medical attention.

3. Package Contents

• hygger Custom LED Aquarium Light Fixture (Model HG129)
• Extendable Mounting Brackets (2 pcs)
• In-line Remote Controller
• Power Adapter
• User Manual

4. Setup Instructions

1. Attach Mounting Brackets: Slide the extendable brackets onto both ends of the light fixture. Adjust the length of the brackets to fit your aquarium size (24-30 inches).
2. Position the Light: Place the light fixture securely on top of your aquarium. Ensure it is stable and centered.


A close-up view of the adjustable mounting brackets, illustrating how they extend to fit various aquarium sizes and securely hold the light fixture in place.

3. Connect the Controller: Plug the light fixture's cable into the in-line remote controller.
4. Connect Power: Plug the power adapter into the remote controller, then plug the power adapter into a suitable electrical outlet.
5. Initial Power On: The light will turn on. The display on the remote controller will show the current time.
6. Install Cell Battery (if not pre-installed): The remote controller uses a CR1220 cell battery to retain settings during power outages. Ensure it is correctly installed.


An internal view of the remote control, highlighting the location of the CR1220 lithium cell battery, which provides memory function for settings during power interruptions.

5. Operating Instructions

The hygger Custom LED Aquarium Light offers three primary operating modes: Daylight-Moonlight Mode, 24/7 Mode, and Manual Mode. All settings are controlled via the in-line remote.

A detailed diagram of the in-line remote control, illustrating each button's function for setting time, adjusting modes (Day-Moon, 24/7), controlling colors, and brightness levels.

5.1. Setting the Time

1. Press the SET button once to select 12H or 24H format. Use UP / DOWN to toggle.
2. Long press the SET button until the hour digits flash. Use UP / DOWN to adjust the hour. Press SET to confirm and move to minutes.
3. Adjust minutes using UP / DOWN. Press SET to confirm and exit time setting.

5.2. Daylight-Moonlight Mode

This mode mimics natural light cycles with a gentle ramp-up and ramp-down feature.

An overview of the Day-Moon light mode, displaying preset daylight (06:00-18:00) and moonlight (18:00-23:00) settings, along with custom options for color and brightness.

1. Press the D/M button to activate or deactivate Daylight-Moonlight mode.
2. Long press the D/M button to program the begin and end times for Daylight and Moonlight phases.
3. Use UP / DOWN to adjust hours and minutes for each phase. Press D/M to cycle through settings.
4. You can also customize the brightness percentage for White, Blue, Red, and Green LEDs for both Daylight and Moonlight phases using the UP / DOWN buttons when the respective color channel is flashing.

5.3. 24/7 Mode

This mode allows for a fully customizable 24-hour lighting cycle with 5 programmable time points (L1-L5).

An illustration of the 24/7 light cycle mode, demonstrating how the light simulates natural day-night transitions, including sunrise, dawn, daytime, and moonlight phases, with corresponding tank appearances.

1. Press the 24/7 button to activate or deactivate 24/7 mode.
2. Long press the 24/7 button to program the 5 set points (L1-L5).
3. For each set point (L1-L5), use UP / DOWN to adjust the begin and end times. Press 24/7 to move to the next setting.
4. Configure the brightness percentage for White, Blue, Red, and Green LEDs for each set point using the UP / DOWN buttons when the respective color channel is flashing.

5.4. Manual Mode (Color and Brightness Adjustment)

This mode allows for immediate manual control over color and brightness.

A visual guide to the manual mode, showcasing the 8 available colors (Full Spectrum, Red, Orange, Yellow, Green, Cyan, Blue, Plum) and 20 levels of dimmable brightness, from 5% to 100%.

1. Press the ON/OFF button to turn the light on. Keep pressing to cycle through desired colors (8 available: White, Red, Orange, Yellow, Green, Cyan, Blue, Purple).
2. To adjust brightness (0-100% in 5% increments), use the UP / DOWN buttons.
3. To enter the color changing loop, press ON/OFF twice quickly. The light will slowly cycle through all available colors.
4. To turn the light fixture off, long press the ON/OFF button.

5.5. Ramp Up/Down Feature

The light features a 15-minute gradual ramp-up and ramp-down effect when transitioning between programmed light phases or when turning on/off in certain modes. This helps prevent light shock for aquatic inhabitants.

A sequence of images demonstrating the 15-minute slow ramp-up and ramp-down feature, showing the gradual increase in light intensity over 5, 10, and 15 minutes to prevent light shock.

6. Maintenance

• Cleaning: Regularly wipe the light fixture with a soft, damp cloth to remove dust and water spots. Ensure the light is unplugged before cleaning. Do not use abrasive cleaners.
• Controller Care: Keep the in-line controller dry and clean. Avoid exposing it to direct sunlight or extreme temperatures.
• Battery Replacement: If the controller loses time or settings frequently, the CR1220 cell battery may need replacement. Refer to Section 4 for battery location.

7. Troubleshooting

• Light does not turn on:
  • Check if the power adapter is securely plugged into both the controller and the wall outlet.
  • Ensure the light fixture cable is firmly connected to the controller.
  • Verify the power outlet is functional.
• Controller loses time or settings:
  • The internal CR1220 cell battery may be low or depleted. Replace the battery.
  • Ensure the battery is installed correctly.
• Difficulty programming modes:
  • Refer to Section 5 and carefully follow the step-by-step instructions for each mode.
  • Practice the button presses (short press vs. long press) to ensure correct input.
• Light flickers or colors are inconsistent:
  • Check all cable connections for looseness.
  • Ensure the power adapter is providing stable power.
  • Contact customer support if the issue persists.

8. Specifications

A comparison table detailing different hygger LED aquarium light models (HG129-20W, HG129-26W, HG129-36W, HG129-48W, HG129-60W, HG129-72W), including their dimensions, suitable tank sizes, LED quantities, and lumen output.

9. Warranty and Support

For warranty information and customer support, please refer to the product packaging or visit the official hygger website. Keep your purchase receipt for warranty claims.