Hygger HG999-26W Programmable Aquarium Light
Hygger HG999-26W Programmable Aquarium Light
✨ hygger HG999-26W Programmable LED Aquarium Light provides bright WRGB full-spectrum illumination for popular 30-inch freshwater aquariums. Its LCD controller lets you manage daytime lighting, evening colours, brightness, and a personalized daily program—without an app or Wi-Fi.
🌱 Beginner-Friendly: Use the straightforward Day or Night mode for a simple routine, or switch to DIY mode when you want more control over each part of the day.

Enhance Fish and Plant Colours
Balanced white, red, green, and blue light adds clarity and contrast while making greenery, red plants, fish, rocks, and wood appear more vivid.
See Your Settings at a Glance
The LCD screen clearly displays the time, selected mode, brightness, and scheduled operation, so you don’t have to guess what the light is doing.
Comfortable Changes for Aquarium Life
Gradual lighting transitions create a gentler environment than switching instantly between darkness and full brightness.
Designed for Everyday Aquarium Use
The slim aluminum housing disperses heat efficiently, while adjustable metal brackets provide a stable fit across compatible aquariums.
Model: HG999-26W
Power: 26W
Light Type: Full-spectrum WRGB LED
Light Output: Approximately 1,720 lumens
Colour Temperature: Approximately 6500 K
Colour Rendering: Approximately CRI 89
Construction: 1.2 mm aluminum housing with a sealed light body
Water Protection: IP68-rated fixture; the controller, adapter, and electrical connections must remain dry
Fixture Size: Approximately 72.4 × 11 × 1.3 cm (28.5 × 4.3 × 0.5 in)
Input: AC 100–240V, 50/60Hz
Output: DC 20V
Tank Size: Designed for aquariums measuring approximately 76–89 cm (30–35 inches) wide. This includes many 76–140 L (20–37 gallon) freshwater aquariums. Measure the outside width before ordering.
20-Gallon Long Tanks: Most standard 20-gallon long aquariums are approximately 76 cm (30 inches) wide and are a good match.
29 and 37-Gallon Tanks: Many standard models are approximately 76 cm (30 inches) wide and fit within the recommended range.
40-Gallon Breeder Tanks: Most are slightly over 91 cm (36 inches) wide and should use a larger HG999 model for better coverage.
Plant Compatibility: Suitable for low- and moderate-light plants such as Anubias, Bucephalandra, Java fern, Cryptocoryne, mosses, Vallisneria, Bacopa, Rotala, Ludwigia, Hygrophila, and floating plants.
Fish Compatibility: Suitable for tetras, rasboras, barbs, danios, gouramis, livebearers, Corydoras, dwarf cichlids, and other appropriately stocked freshwater community aquariums.
Shrimp & Snail Compatibility: Suitable for planted shrimp and snail aquariums. Introduce higher brightness gradually, especially in shallow tanks.
CO₂: Optional for low-tech aquariums. CO₂ and balanced fertilization can improve the growth and colour of more demanding stem plants.
Recommended Schedule: Begin with 6–8 hours per day at moderate brightness, then adjust gradually according to plant growth and algae levels.
Best Use: Freshwater planted tanks, community aquariums, shrimp tanks, and medium-sized aquascapes.
Not Recommended For: Saltwater aquariums, photosynthetic corals, or use as a dedicated reef light.
Package Includes:
- 1 × hygger HG999-26W LED aquarium light with wired LCD controller
- 1 × AC/DC power adapter
- 2 × Extendable metal mounting brackets
- 1 × User manual
Installation: Attach the brackets to both ends, centre the fixture over the aquarium, and position the controller where it will remain dry and easy to reach.
Controller Setup: Set the correct local time before choosing Day, Night, or DIY mode. Follow the manual in sequence when creating a custom program.
Care: Disconnect the power before cleaning. Wipe the housing with a soft, damp cloth and never intentionally submerge the lighting system.
Tip: Disable the standard Day and Night programs before activating DIY mode. Overlapping programs may prevent the custom schedule from operating correctly.
Control: Six-button wired LCD controller; no app or Wi-Fi required
Day Mode: Adjustable full-spectrum white light with ten brightness levels from 10–100%
Night Mode: Select red, orange, yellow, green, cyan, blue, or purple evening illumination
DIY Mode: Build a complete 24-hour program using up to eight consecutive lighting periods
Custom Settings: Assign an ending time, WRGB colour, and brightness to each stage of the schedule
Automatic Transitions: Approximately 15-minute fade-in and fade-out at the beginning and end of Day or Night mode
Memory Function: Retains the programmed settings after a power interruption; the local clock must be reset when power returns
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