1. Introduction
This manual provides essential information for the safe and effective use of your hygger Aquarium UV Light with Timer, Model HG. This device is designed to enhance water clarity and promote a healthier aquatic environment by treating green water and controlling algae in both freshwater and saltwater aquariums.
2. Important Safety Information
WARNING: Ultraviolet (UV-C) light can be harmful to eyes and skin. Never look directly at the UV bulb when it is illuminated. Ensure the protective shield is properly engaged when the device is placed directly in the aquarium with fish or other living organisms.
- Always unplug the device from the power outlet before performing any maintenance, cleaning, or handling the unit.
- Do not operate the UV light if the quartz glass tube is broken or damaged.
- Keep the device out of reach of children.
- This device is designed for submersible use only within an aquarium or filter system. It is not waterproof for external use.
- Ensure the power cord is not damaged or pinched.
- Avoid placing the device in areas where fish may directly contact the open UV light if using in high-efficiency mode within the main tank.
3. Package Contents
- 1x hygger Aquarium UV Light with Timer (Model HG)
- 2x Suction Cups
- 1x User Manual
4. Product Features
- Enhanced Clarity and Health: Utilizes 254nm wavelength UV-C light for effective treatment of green water and algae, promoting a safe and clear environment for aquatic life.
- 4 Modes Timing and Memory: Features a user-friendly timer with 3H, 6H, 12H, and 24H settings. The device remembers the last selected timing, automatically managing the on/off cycle.
- 360° Protective Shield: Equipped with an adjustable 360° annular cover structure to prevent direct exposure of UV-C light to fish and users, ensuring safety.
- Healthy Mode: When the protective shield is closed, the device can be placed directly in the fish tank. This mode minimizes direct UV exposure to tank inhabitants.
- High Efficiency Mode: When the protective shield is open, the device is suitable for placement in filter tanks, allowing for maximum UV-C exposure to circulating water.
- Compact Design: Small size (1.85"D x 1.85"W x 4.57"H) allows for versatile placement in various aquarium setups.
5. Setup and Installation
- Attach Suction Cups: Secure the two provided suction cups to the back of the UV light unit.
- Choose Placement: Determine the optimal location for your UV light based on your aquarium setup and desired mode of operation.
- In-Tank Placement (Healthy Mode): If placing directly inside the main aquarium, ensure the 360° protective shield is fully closed to prevent direct UV exposure to fish. Attach the unit to the inner glass wall using the suction cups, avoiding high-traffic areas for fish.
- In-Filter Placement (High Efficiency Mode): If placing within a filter compartment (e.g., bottom filter, back filter, external filter, upper filter), you may open the 360° protective shield for maximum water treatment efficiency. Ensure the UV light is fully submerged and securely positioned within the filter.
- Connect to Power: Plug the power adapter into a suitable electrical outlet.
Image: hygger Aquarium UV Light with Timer, showing the main unit with attached suction cups and the inline timer controller.
Image: Examples of installation locations, including in-tank, bottom filter, back filter, external filter, and upper filter setups.
Video: Official hygger video demonstrating the installation and timer functions of the Aquarium Clean Light.
6. Operating Instructions
- Power On: Once plugged in, the device will be in standby mode. Press the power button on the inline controller to turn it on.
- Select Timer Setting: Repeatedly press the power button to cycle through the available timer settings: 3 hours, 6 hours, 12 hours, or 24 hours. An indicator light will illuminate next to the selected duration.
- Memory Function: The device will remember your last selected timer setting. When powered on again, it will automatically resume the previously set cycle.
- Adjust Protective Shield: Depending on your installation, adjust the 360° protective shield:
- Healthy Mode (Shield Closed): Rotate the bottom ring of the unit to fully close the shield, ensuring no direct UV light escapes. This is recommended for in-tank placement with fish.
- High Efficiency Mode (Shield Open): Rotate the bottom ring to open the shield, exposing the UV bulb. This mode is for placement within a filter system where fish cannot directly access the light.
Image: The inline timer controller, illustrating the power button and the four timing options (3, 6, 12, 24 hours).
Image: Visual representation of the 360° adjustable protective shield, highlighting its open and closed positions.
Image: Illustrates the difference between Healthy Mode (protective shield closed, placed in fish tank) and High Efficiency Mode (protective shield open, placed in filter tank).
7. Maintenance
Regular maintenance ensures optimal performance and longevity of your UV light.
- Cleaning the Quartz Glass Lamp Tube: Over time, mineral deposits or algae may accumulate on the quartz glass tube, reducing UV-C penetration.
- Unplug the device and carefully remove it from the aquarium or filter.
- Unscrew the light shield and gently remove the quartz glass lamp tube.
- Wipe the quartz glass tube with a soft, damp cloth or paper towel. For stubborn deposits, a mild vinegar solution can be used, followed by a thorough rinse with clean water.
- Ensure the tube is completely dry before reassembling.
- Bulb Replacement: The UV-C bulb has a limited lifespan. If the light output diminishes or the bulb stops working, it may need replacement. Compatible replacement bulbs are sold separately under model HG245.
Image: Demonstrates how to unscrew the light shield and clean the quartz glass lamp tube with a paper towel.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| UV Light not turning on | No power; Bulb failure; Controller malfunction | Check power connection; Replace bulb (Model HG245); Contact support if controller is faulty. |
| Water not clearing | Insufficient run time; Dirty quartz tube; Incorrect placement; Over-sterilization (killing beneficial bacteria) | Increase run time (e.g., 6-12 hours); Clean quartz tube; Ensure proper water flow past the UV light; Adjust timing to avoid over-sterilization. |
| Algae still present | UV light not effective against all algae types (e.g., hair algae); Insufficient run time; Nutrient imbalance in tank | UV light is primarily for green water algae. For other types, manual removal and addressing nutrient issues are necessary. Adjust run time. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | HG |
| Wattage | 3 watts |
| Recommended Tank Size | 5-25 Gallons |
| Product Dimensions | 1.85"D x 1.85"W x 4.57"H |
| Item Weight | 11.52 ounces |
| Light Source Type | Fluorescent (UV-C) |
| Bulb Base | G5.3 |
| Power Source | Corded Electric |
| Material | Glass, Plastic |
| Color | Black |
| Timer Settings | 3H, 6H, 12H, 24H |
10. Warranty and Support
The hygger Aquarium UV Light with Timer (Model HG) comes with a 2-year warranty from the date of purchase. For warranty claims, technical support, or any product-related inquiries, please contact hygger customer service through the retailer where the product was purchased or visit the official hygger website.
