Introduction
Thank you for choosing the Gamalta LED Aquarium Light. This light is designed to enhance your freshwater planted tank by simulating natural lighting cycles, offering a full spectrum of colors, and providing customizable settings. Its advanced features ensure a vibrant and healthy environment for your aquatic life.

Image: The Gamalta LED Aquarium Light with its wired control panel, showcasing the light bar and its extendable brackets.
Product Features
- Upgraded Design: Features larger lamp beads and a stable, shiny surface for enhanced visual comfort. Retractable stands extend up to 6 inches, fitting most freshwater tanks with or without lids. The aluminum housing ensures excellent water resistance and heat dissipation.

Image: Close-up of the Gamalta LED Aquarium Light showing the extendable brackets and the light bar's design.
- 24/7 Natural Mode: Simulates a natural sunrise-to-night lighting pattern. Default settings include orange light from 6 am to 8 am, white light after 8 am, gradual blue light from 6 pm to 10 pm, and off for the rest of the day. The first running time can be adjusted using the 24H button and 6 time point indications.

Image: Diagram illustrating the 24/7 Natural Mode's default lighting schedule and its effects on the aquarium.
- Customization Mode: Allows users to set light color, time, and brightness. Features eight color settings (white, red, green, blue, purple, orange, cyan, and cycle mode), adjustable running times (6H/10H/12H), and five brightness levels (10%-100%) with stepless dimming.

Image: Detailed view of the light's control panel, highlighting buttons for 24-hour cycle, timing, brightness adjustment, and mode selection.

Image: Visual representation of the eight available color modes (white, red, blue, green, purple, orange, cyan, and cycle) as seen in an aquarium.
- High-Quality Lamp Beads: Utilizes 5730+5050 type lamp beads for stable, strobe-free light. An 85% color rendering index provides light close to natural sunlight, beneficial for fish and plant health. Glue-filled technology and an acrylic baffle ensure waterproofing and extended service life.

Image: Illustration demonstrating the light's IP68 waterproof rating, showing water splashing over the light bar.
Setup Guide
- Unpack: Carefully remove all components from the packaging. Verify that all parts are present: LED light bar, extendable brackets, and wired controller.
- Attach Brackets: Slide the extendable brackets onto each end of the LED light bar. Ensure they are securely attached.
- Position Light: Place the light bar on top of your aquarium. Adjust the extendable brackets to fit the width of your tank, ensuring the light is centered and stable. The brackets can extend up to 6 inches.
- Connect Power: Connect the wired controller to the light bar, then plug the power adapter into a suitable power outlet. Ensure all connections are secure.

Image: The LED aquarium light positioned on top of a fish tank, demonstrating its fit and appearance.
Operating Instructions
Controller Overview

Image: Detailed view of the light's control panel, highlighting buttons for 24-hour cycle, timing, brightness adjustment, and mode selection.
- ON/OFF Button: Press to turn the light on or off.
- MODE Button: Cycles through the 8 available color modes (White, Red, Green, Blue, Purple, Orange, Cyan, and Cycle).
- Brightness Buttons (+/-): Adjusts the light brightness. There are 5 levels (10%-100%). Long press for stepless dimming.
- TIME Button: Sets the running duration to 6H, 10H, or 12H.
- 24H AUTO Button: Activates the 24/7 Natural Mode.
24/7 Natural Mode
This mode simulates a natural day-night cycle for your aquarium. To activate:
- Press the 24H AUTO button.
- By default, the light turns on at 6:00 AM. You can adjust the initial start time using the 24H button in conjunction with the 6 time point indicators (AM8, AM10, AM12, PM15, PM18, PM22) to advance or delay the entire cycle.
- The default cycle is:
- 6:00 AM - 8:00 AM: Gradual orange light (sunrise simulation).
- After 8:00 AM: Fades to white light.
- 6:00 PM - 10:00 PM: Gradually changes to blue light (sunset simulation).
- Rest of the day: Light remains off.
Note: In 24/7 Natural Mode, manual time and brightness adjustments are not available.

Image: Diagram illustrating the 24/7 Natural Mode's default lighting schedule and its effects on the aquarium.
Customization Mode (DIY Mode)
For personalized lighting, use the Customization Mode:
- Select Color: Press the MODE button repeatedly to cycle through the 8 available colors until your desired color is displayed.
- Adjust Brightness: Use the + and - buttons to set the desired brightness level (10% to 100%). Long press for fine-tuning.
- Set Timer: Press the TIME button to select a running duration of 6 hours, 10 hours, or 12 hours. The light will automatically turn off after the selected duration.

Image: Visual representation of the eight available color modes (white, red, blue, green, purple, orange, cyan, and cycle) as seen in an aquarium.
Maintenance
The Gamalta LED Aquarium Light is designed for durability and ease of maintenance.
- Cleaning: Periodically wipe the light bar and its acrylic baffle with a soft, damp cloth to remove dust, water spots, or algae buildup. Ensure the light is unplugged before cleaning.
- Waterproof Design: Thanks to its IP68 waterproof rating and glue-filled technology, the lamp beads are protected from water vapor. However, avoid submerging the entire unit.
- Storage: If storing the light for an extended period, ensure it is clean, dry, and stored in a cool, dry place away from direct sunlight.

Image: Illustration demonstrating the light's IP68 waterproof rating, showing water splashing over the light bar.
Troubleshooting
If you encounter issues with your Gamalta LED Aquarium Light, please refer to the following common solutions:
- Light Not Turning On:
- Check if the power adapter is securely plugged into both the light controller and the wall outlet.
- Ensure the wall outlet is functioning correctly by testing it with another device.
- Press the ON/OFF button on the controller.
- Colors Not Changing/Brightness Not Adjusting:
- Ensure the light is not in 24/7 Natural Mode, as manual adjustments are disabled in this mode. Press the 24H AUTO button to exit this mode if active.
- Verify that the controller buttons are being pressed firmly.
- Light Flickering:
- Check all cable connections for looseness.
- Ensure the power supply is stable.
If the problem persists after trying these steps, please contact customer service for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Gamalta |
| Model Number | HD-YG-700 |
| Product Dimensions | 24"D x 4"W x 1.46"H |
| Item Weight | 4.8 ounces |
| Lamp Type | LED |
| Light Source Type | LED |
| Wattage | 22 watts |
| Brightness | 1612 Lumen |
| Color Temperature | 6500 Kelvin |
| Water Resistance Level | Waterproof (IP68) |
| Material | Aluminum |
| Control Method | Touch (via wired controller) |
| Power Source | Corded Electric |
| Connectivity Technology | USB |
| Suitable Tank Size | 24~30 inch Fish Tank |
Warranty and Support
Gamalta stands behind the quality of its products. Your LED Aquarium Light comes with a 90-Day Money Back Guarantee.
For any issues, questions, or support needs, please do not hesitate to contact our customer service team. We are committed to providing 24-hour friendly customer service and will provide a satisfactory answer as soon as possible.
Customer Service Email: Support@gamalta-home.com

Image: Gamalta customer service contact information, encouraging users to reach out for support.