Best 30-Inch LED Lights for 20-Gallon Long and 29-Gallon Aquariums

If you own a 20-gallon long or a 29-gallon aquarium, choosing the right light isn’t just about brightness—it’s about proper fit and coverage. Both tank sizes typically measure 30 inches in length, which makes a 30-inch LED light the perfect match. Whether you’re growing live plants, enhancing fish colors, or simply looking for a sleek, energy-efficient setup, the right LED light can transform your tank’s look and health. In this guide, we’ll walk you through the best 30-inch LED lights designed to bring out the full potential of these popular aquarium sizes.

• Best LED lights for 15 to 20-gallon tanks
• 30-Inch Aquarium Light reviews
  • AQQA LED Aquarium Light 24/7
  • Hygger 24/7 LED aquarium light with inline timer
  • NICREW Classic LED G2 aquarium light 24-36 inch
  • Finnex Stingray 3, 24/7 Lunar+, Controllable
  • Finnex Planted+ 24/7 Aquarium LED Light 3.0 Series

Best LED lights for 15 to 20-gallon tanks

Model	Our rating	PAR	Ideal for	Fixture sizes	For tanks	LEDs	Modes	Wattage
	AQQA LED Aquarium Light 24/7 #ad	_	fish, most plant types	clip light	20-29 gallons, 24-31.4 inches (60~80 cm)	72 pcs	7 colors, 6H/10H/12H timer, 24/7 automatic cycle	26 watts
	Hygger Full Spectrum aquarium light #ad	–	fish-only, most plant types	30-36 inches	20 Gal long, 29 gallons	63 White + 26 Blue + 9 Red + 6 Green + 26 RGB	multi colors, 6/10/12H timer, 24/7 timer	26 watts
	NICREW Classic LED G2 #ad	75 @ 12-inch depth	fish, most types of plants	extendable from 30 to 36 inches	20-gallon long, 29-gallon	90 white & 18 blue	8/10/12H timer	18 watts
	Finnex Stingray 3 #ad	65 @ 14″	fish-only, medium light plants	30 inches (available 12-48″)	20-gallon long, 29-gallon	5700k + 6500k + True 660nm Deep Red + 660nm Midnight Blue	6/9/12H timer, 24/7 program	22W
	Finnex Planted+ 24/7 3 series #ad	105 @ 14″	fish-only, high light level plants	30 inches (available 20-48″)	20-gallon long, 29-gallon	True 660nm Deep Red, 660nm Moonlights, 6500k + 5700k Pure Daylight	6/9/12H timer, 24/7 program	36 W

30-Inch Aquarium Light reviews

AQQA LED Aquarium Light 24/7

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• PAR: _
• Ideal for: fish, most plant types
• Fixture: clip light
• For tanks: 20-29 gallons, 24-31.4 inches (60~80 cm)
• LEDs: 72 pcs
• Modes: 7 colors, 6H/10H/12H timer, 24/7 automatic cycle
• Wattage: 26 watts

24/7 Default mode #ad

The controller on the AQQA 24/7 Clip-On LED isn’t just a convenience—it’s the core of what makes this light system so user-friendly. Whether you’re new to fishkeeping or a seasoned aquarist, the straightforward controller layout allows you to navigate between automatic and manual modes with ease. In 24/7 mode, the light mimics a full circadian cycle, with gradual color and brightness changes that create a calming, realistic habitat for aquatic life.

DIY mode #ad

Manual control is just as simple. The DIY mode offers fine-tuned adjustments to brightness, color spectrum, and operation time, letting you craft the perfect atmosphere for plant growth or visual display. The controller is built directly into the cord and responds quickly to input, with no delay or learning curve. It’s plug-and-play, requiring no app pairing or external timer.

This unit is ideal for both rimmed and rimless tanks, thanks to its adaptable mounting system. More importantly, the built-in memory ensures all settings are saved—even after an unplug or outage—so you can count on consistent performance every day. With just a few button presses, the AQQA light transforms your tank into a dynamic, self-regulating environment.

Hygger 24/7 LED aquarium light with inline timer

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• PAR: –
• Ideal for: fish-only, most plant types
• Fixture sizes: 30-36 inches
• For tanks: 20 Gal long, 29 gallons
• LEDs: 63 White + 26 Blue + 9 Red + 6 Green + 26 RGB
• Modes: multi colors, 6/10/12H timer, 24/7 timer
• Wattage: 26 watts

This full-spectrum LED light is ideal for both fish and plants. It works well for most types of aquatic plants. Its inline controller includes so many wonderful features that are very helpful for aquarium uses.

Inline controller #ad

It offers two timer modes – simple On/Off or 24/7 schedule. For the simple On/Off, the timer key lets you set the working time to 6/10/12 hours. For the 24/7 schedule, just pick a time near the current time and the light will change to that time.

24/7 lighting cycle #ad

The inline controller allows you to mix and match the brightness, colors, and timings. Use On-Off/M and Up/Down keys to custom your own color as your personal preference. The On-Off/M key lets you change the color and choose one of 7 different options. The Up/Down key shifts and changes brightness levels from 10-100%.

Made of an aluminum casing, the light is also very durable and long-lasting. The extendable bracket works best for tanks from 30 to 36 inches long. The light can last at least 50,000 hours and is suitable for long-term usage.

NICREW Classic LED G2 aquarium light 24-36 inch

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• PAR: 75 @ 12-inch depth
• Ideal for: fish, most types of plants
• Fixture sizes: extendable from 30 to 36 inches
• For tanks: 20-gallon long, 29-gallon
• LEDs: 90 white & 18 blue
• Modes: 8/10/12H timer
• Wattage: 18 watts

To kick start our reviews, we will begin with the versatile and practical Nicrew Classic LED G2 aquarium light. The light is best suited for fish-only fresh /salt-water or planted freshwater tanks and when you want to add a shimmer to your tank.

Inline timer controller #ad

The inline timer controller comes with some helpful features. It allows you to dim the blue and white channels separately. It also includes an easy-to-use timer that allows you to set the working time of the light to 8, 10, or 12 hours per day. The timer is simple but very helpful if you want to automatically turn the light on/off on time daily.

Finnex Stingray 3, 24/7 Lunar+, Controllable

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• PAR: 65 @ 14″
• Ideal for: fish-only, medium light plants
• Fixture sizes: 30 inches (available 12-48″)
• For tanks: 20-gallon long, 29-gallon
• LEDs: 5700k + 6500k + True 660nm Deep Red + 660nm Midnight Blue
• Modes: 6/9/12H timer, 24/7 program
• Wattage: 22W

The Finnex Stingray 3 Aquarium LED Light is designed to simplify your aquarium care while elevating the beauty of your tank. With its sleek, low-profile design, this light brings out the natural vibrancy of fish and plants while remaining discreet above the glass. Its energy-efficient LEDs provide a gentle shimmer that enhances aquascapes without overwhelming them.

One of the standout features is the built-in timer system that allows you to set 6-, 9-, or 12-hour lighting periods. This function makes it easy to maintain a consistent schedule for your fish and plants, ensuring they receive just the right amount of illumination without the hassle of manual adjustments. It’s an effortless way to mimic the natural rhythm of day and night.

For those seeking an even more natural experience, the Finnex Stingray 3 also offers a 24/7 timer mode. This setting automatically transitions through sunrise, daylight, sunset, and moonlight, creating a complete cycle that mirrors nature’s patterns. Your aquarium becomes more than just a tank—it becomes a dynamic, living environment.

With its combination of simplicity and advanced features, the Stingray 3 is an excellent choice for both beginner and seasoned aquarists who value both functionality and beauty in their setup.

Finnex Planted+ 24/7 Aquarium LED Light 3.0 Series

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• PAR: 105 @ 14″
• Ideal for: fish-only, high light level plants
• Fixture sizes: 30 inches (available 20-48″)
• For tanks: 20-gallon long, 29-gallon
• LEDs: True 660nm Deep Red, 660nm Moonlights, 6500k + 5700k Pure Daylight
• Modes: 6/9/12H timer, 24/7 program
• Wattage: 36 W

The Finnex Planted+ 24/7 Aquarium LED Light 3.0 Series is built for aquarists who want both convenience and professional-level plant growth. Designed with a sleek, low-profile aluminum housing, it blends into your setup while delivering the power and precision needed for vibrant, thriving aquascapes. Its strong PAR output makes it suitable for most freshwater plants, from low-maintenance species to more demanding high-light varieties.

For reliable daily operation, the fixture includes a simple timer with 6-, 9-, and 12-hour settings. This makes it easy to maintain a consistent lighting schedule, ensuring your fish and plants receive the right balance of light without the hassle of manual switching. Once programmed, the light takes care of itself, letting you focus on enjoying your aquarium.

Where the Planted+ truly stands out is its advanced 24/7 cycle mode. This feature simulates the natural passage of time with gradual transitions through sunrise, midday, sunset, and moonlight. Not only does this create a visually stunning display, but it also provides a calming, natural rhythm that benefits both plants and fish.

By combining practical automation with high PAR output and advanced spectrum control—including dedicated 660nm red LEDs for photosynthesis—the Finnex Planted+ 24/7 Series is a comprehensive solution for aquarists who want to take their planted tanks to the next level.