Introduction
The Finnex HLC series aquarium LED light is designed to provide a full spectrum lighting solution for planted aquariums. This slim fixture features a unique four-bulb cluster of 8000K Daylight, Red, Blue, and Green LEDs, supporting plant growth and enhancing the appearance of aquatic life. The HLC series includes a 24/7 color control system, allowing users to customize and save various color combinations and intensities for a daily sunrise-to-sunset cycle. Additionally, it offers four memory slots for custom settings and four distinct weather modes: Cloudy, Thunderstorm, Sunset, and Starry Moon Night. An integrated sensor with two color indicator LEDs assists in setting adjustments.
Setup Instructions
- Unpack Components: Carefully remove the LED light fixture, remote control, and two clear mounting legs from the packaging. Inspect all components for any damage.
- Install Remote Batteries: The remote control requires two AAA batteries, which are included. Open the battery compartment on the back of the remote and insert the batteries, observing the correct polarity.
- Attach Mounting Legs: Slide the clear mounting legs onto the ends of the LED fixture. Ensure they are securely seated.
- Position Light Fixture: Place the light fixture on top of your aquarium. The legs are designed to fit various tank rim sizes. Ensure the light is centered and stable.
- Connect Power: Plug the power adapter into the light fixture, then plug the adapter into a suitable electrical outlet.
- Important Note: This fixture is designed for use over covered aquariums to protect it from moisture and splashes.

Operating Instructions
The Finnex HLC-24 LED light is controlled via the included IR remote. Familiarize yourself with the remote's functions for optimal use.
Remote Control Overview

- Power Button: Turns the light fixture on or off.
- MAX Button: Activates maximum lighting intensity for plant support.
- 24/7 Control Mode: Engages the default 24/7 seamless sunrise and sunset cycle.
- CC (Color Control) Button: Allows users to set custom colors and intensities within the 24/7 program for personalized lighting schedules.
- Weather Modes: Buttons for Cloudy, Thunderstorm, Sunset, and Starry Moon Night effects.
- Memory Keys (M1-M4): Store customized color settings for quick access.
- Manual Color Adjustment (R, G, B, W buttons with Up/Down arrows): Increase or decrease the intensity of each color spectrum (Red, Green, Blue, White) for programming custom colors and fine-tuning the 24/7 cycle.
24/7 Mode and Customization
The fixture's 24/7 mode provides an automated daily cycle, simulating natural light changes from sunrise to sunset. To customize this, use the CC button to enter color control mode. You can adjust the intensity of Red, Green, Blue, and White LEDs at different time points throughout the day. Once satisfied, save your preferred settings to one of the four memory slots (M1-M4) for easy recall.
This video demonstrates the Finnex Planted Plus 24/7 HLC Aquarium LED light in operation, showcasing its customizable light cycles and effects.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your Finnex HLC-24 LED light.
- Cleaning: Periodically wipe the light fixture with a soft, dry cloth to remove dust and water spots. Ensure the light is unplugged before cleaning. Do not use abrasive cleaners or solvents.
- Moisture Protection: The fixture features moisture-resistant LEDs with dual conformal coatings and a splash guard. However, it is crucial to use the light over a covered aquarium to prevent direct water exposure and excessive humidity, which can still impact performance and lifespan.

Troubleshooting
If you encounter issues with your Finnex HLC-24 LED light, refer to the following common solutions:
- Light Not Responding to Remote:
- Check if the remote control batteries (2 AAA) are correctly installed and have sufficient charge. Replace if necessary.
- Ensure there is a clear line of sight between the remote and the light fixture's IR sensor. Obstructions can block the signal.
- Light Not Turning On:
- Verify that the power adapter is securely plugged into both the light fixture and a working electrical outlet.
- Confirm the remote control is functioning and the power button has been pressed.
- Loss of Settings After Power Outage:
- The fixture does not retain programmed settings during a power interruption. You will need to reprogram your desired 24/7 cycle or custom settings using the remote control once power is restored.
- Excessive Algae Growth:
- Algae growth can be influenced by light intensity and duration. Consider reducing the overall light intensity or shortening the duration of the peak lighting period in your 24/7 cycle.
- Ensure your aquarium is not receiving direct sunlight, which can exacerbate algae issues.
- Mounting Legs Slide Easily:
- Ensure the legs are fully inserted and seated into the fixture's channels. While designed for adjustability, ensure they are positioned firmly on the aquarium rim to prevent accidental movement.
Specifications
| Model Number | HLC-24 |
| Product Dimensions | 24 x 3 x 0.45 inches (Light Fixture) |
| Item Weight | 1 Pound (16 ounces) |
| Material Type | Aluminum |
| Wattage | 19 watts |
| Light Source Type | LED (Daylight, Red, Blue, Green) |
| Number of Light Sources | 4 (cluster type) |
| Control Method | IR Remote Control |
| Batteries Required | 2 AAA (included for remote) |
| Water Resistance Level | Not Water Resistant (use over covered aquariums) |
| Included Components | LED Body, Remote, 2 Clear Legs |
| Safety Certification | ETL Listed |

Warranty Information
The Finnex Planted Plus True 24/7 + HLC Aquarium LED Light (HLC-24) is covered by a 180-day manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
Customer Support
For further assistance, technical support, or warranty inquiries, please contact Finnex customer service. Refer to the contact information provided with your product packaging or visit the official Finnex website for support details.