10 Best Aquarium 45 Gallon Led Light of 2025

Tested and Reviewed: Top 10 Aquarium 45 Gallon Led Light deals with expert ratings from 8.1 to a perfect 10

August 2025 Edition

Editor's Choice

9.7

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AQUANEAT

AQUANEAT LED Aquarium Light Full Spectrum for 18 Inch to 24 Inch Fish Tank Light Fresh Water

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Editor's bottom line:

“This aquarium 45 gallon led light is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Fits aquarium tank up to 10 gal from 18" to 24" in length with adjustable mounting brackets
Light body without docking brackets: 17 L x 2.7 W. Tank thickness: No limit to rim size
Configuration: Total 42 LEDs, 30 pcs 6500K white LED, 6pcs blue LED, 3 pcs pink LED, 3 pcs Green LED
Mode: all lights on and all lights off
Super bright and energy efficient LEDs, suitable for all freshwater NOTE KEEP THE LIGHT AWAY FROM THE SPLASHING WATER

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Picked by 189 people today

9.5

hygger

hygger Clip On 24/7 Lighting Aquarium LED Light, 14W Sunrise-Daylight-Moonlight and DIY Mode, Adjustable Timer / Brightness Fish Tank Light with 7 Colors for Planted Tank

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Main Highlights

DEFAULT MODE(24/7 Natural Mode): Gradient Orange light (sunrise) from 6 am to 8 am; Gradient White light from 8 am to 6 pm; Gradient Blue light (moonlight) from 6 pm to 10:50 pm; The 24/7 lighting aquarium lights are off in other time periods. The overall default time period can be delayed or advanced
DIY MODE: Full spectrum aquarium light also can change the time + brightness + color. Setting time(TIMER key): 3 kinds of time, 6h, or 10h, or 12h; Brightness(up/down key): 5 kinds of brightness. Color(ON-OFF/ M key): White, Red, Blue, Green, Purple, Orange, Cyan, Cycle Color (no brightness selection)
NEW UPGRADE: Clip style bracket, easy to install, aquarium LED light can be used for different thickness of glass, the body of the fish tank light can be taken off and installed horizontally or vertically. The separable adapter, even if it is damaged, no need to replace the whole light to avoid waste. Thicken aluminum to increase heat dissipation efficiency
USEFUL FISH LIGHT: The hygger aquarium light is soft, the color rendering index is close to natural light, up to 85%, protecting eyes and fish, to refuse the discomfort caused by stroboscopic for fish and viewers. Using high-quality 2835 + 5050 model lamp beads, long service life, at least 50,000 hours. Easy to maintain
14W PRODUCT PARAMETERS: Power:14W; Led QTY:68PCS(White:32PCS/BLUE:12PCS/ RED:7PCS/GREE:3PCS/ RGB:14PCS); CRI:85; Application(for Fish Tnak long):12-20 ; Power Cord: 4.9ft+2.3ft; Input Votage:AC100-240V; Output Votage:DC20V; Kelvin: White 6500K, Blue 455nm, Red 620nm, Green 560nm; Lumens:817

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9.5

hygger

hygger 24/7 Mode Submersible Aquarium LED Light, Full Spectrum Hidden Fish Tank Light with 3 Rows Beads 7 Colors Auto On Off Sunrise-Daylight-Moonlight, Adjustable Timer Brightness 8W

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Main Highlights

DEFAULT MODE(24/7 Natural Mode): Gradient Orange light (sunrise) from 6 am to 8 am; Gradient White light from 8 am to 6 pm; Gradient Blue light (moonlight) from 6 pm to 10:50 pm; The 24/7 lighting aquarium lights are off in other time periods. The overall default time period can be delayed or advanced
DIY MODE: Full spectrum aquarium light also can change the time + brightness + color. Setting time(TIMER key): 3 kinds of time, 6h, or 10h, or 12h; Brightness(up/down key): 5 kinds of brightness. Color(ON-OFF/ M key): White, Red, Blue, Green, Purple, Orange, Cyan, Cycle Color
NEW UPGRADE: With professional white background paper, as a hidden atmosphere light and place it behind the outside of the fish tank. Also can be fixed under the fish tank cover. It can also be put into the water and used as an aquarium submersible light. Safely sealed, IP68 waterproof, and a variety of usage methods
USEFUL HELPERS: The light is soft, the color rendering index is close to natural light, protecting eyes and fish, to refuse the discomfort caused by stroboscopic for fish and viewers. Using high-quality 2835 + 5050 model lamp beads, long service life, at least 50,000 hours. The separable adapter, even if it is damaged, has no need to replace the whole light to avoid waste
PRODUCT PARAMETERS: Power:8W; Led QTY:48 PCS(White:23 PCS/BLUE:6 PCS/ RED:3 PCS/ RGB:16 PCS); CRI:74; Application(for Fish Tnak Long):13-22 ; Power Cord: 6 ft+4.9 ft; Input Votage:AC100-240V; Output Votage:DC 20V; Kelvin: White 6500K, Blue 455 nm, Red 620 nm; Lumens:778.7 lm

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9.2

Save 8%

AQQA

AQQA LED Aquarium Light, 24/7 Mode Clip on Fish Tank Light with Memory Function, DIY Mode Full Spectrum Aquarium Plant Light, Adjustable Timer/Brightness, IP68 Waterproof for 16-24 in Fish Tank 18W

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Main Highlights

HIGH QUALITY AQUARIUM LIGHT - The widened and thickened aluminum gloss shell is more beautiful and durable. Wider surface makes the heat dissipation effect of the light better. Premium 5050 and 2835 leds provide all the lights the plant need, perfect for plant growth.
DIY MODE - You can DIY modes as you like, there has a switch that can adjust brightness & setting time & on/off button & change the light color or enter the cycle color. 5 levels light brightness; 3 lighting timer setting choices (6H/10H/12H); 7 light colors + full spectrum + auto color cycle.
24/7 DEFAULT MODE - Simulates natural living environments, starting with warm orange light at sunrise, moving to 100% brighter full-spectrum light at noon, and then to starry blue light at night. The default light turns on automatically at 6 am and off at 22:58. The automatic on/off time can be postponed or advanced the overall default time period.
FLEXIBLE ADJUSTABLE LIGHT - With a 7-inch long 360° flexible gooseneck tube, you can easily adjust the angle and direction of the light and support move left and right freely. With aluminum alloy clip, equipped with screws for tightening and are safe to use on framed or frameless aquariums up to 0.9 inches thick.
MEMORY FUNCTION - In the event of a power outage or close, the light will retain its previous settings and mode. Once the power is restored, the light will light up in the previously set color, brightness, and lighting time without resetting.

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9.0

hygger

hygger Submersible LED Aquarium Light, 24W 26.8 in 24/7 Mode Fish Tank Light with 5 Rows Beads, with Timer 9 Colors and Adjustable Brightness, Full Spectrum IP68 Waterproof Light for Fish Tank 28-54in

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Main Highlights

[5 columns of Led Chips, High-quality Led]: Compared with other submersible led lights, our lights have up to 5 rows of LED chips, which are brighter and more beautiful. Our fish tank lights use high-quality 2835 + 5050 model lamp beads with a long service life of at least 50,000 hours. Tish ultra bright full-spectrum RGB LEDs can present the vivid colors of aquatic plants and fish, making your fish tank a colorful landscape
[Simulating 24/7 Natural Light Cycle]: Our aquarium lights astonishingly somulate the day-to-night cycle of natural light. It opens or closes slowly over 15 minutes, thus preventing light shock to the fish. From the warm morning sunlight to the rich spectrum at noon, to the soft blue light in the evening, it will make your aquarium look more mysterious and beautiful
[DIY Mode]: This Full spectrum aquarium light can also change time + brightness + color. Set time(TIMER key): 5 kinds of time, 4h, 6h, 8h, 10h, or 12h; Brightness(+/- key): 10 kinds of brightness. Color(M key): White, Red, Blue, Green, Pink, Purple, Orange, Cyan, Cycle Color
[Excellent Sealed Design, IP68 Waterproof]: The submersible aquarium led light is amphibious with IP68 Rating, can be fully submerged in water and work underwate without generating water vapor. Two strong suction cups help to firmly fix the LED light strip on the top of the fish tank or the bottom of the fish tank and anywhere you want to place it in the fish tank, to decorate your fish tank, aquariums, swimming pools, etc.
[Product Parameters]: Power: 24W; Led QTY: 180 PCS(White : 60 PCS/BLUE: 36 PCS/ RED: 6 PCS/ GREEN: 6 PCS/RGB: 72 PCS); CRI: 89; Application(for Fish Tnak Long): 28-54 ; Power Cord: 6 ft+4.8 ft; Input Votage: AC100-240V; Output Votage: DC20V; Kelvin: White 6500K, Blue 455nm, Red 620nm; illuminance: 5567lx.

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8.8

SEAOURA

SEAOURA Led Aquarium Light for Plants-Full Spectrum Fish Tank Light with Timer Auto On/Off, 48-54 Inch, Adjustable Brightness, White Blue Red Green Pink LEDs with Extendable Brackets for Freshwater

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Main Highlights

[DIY MODE]: Time, Colour and Brightness 3 setting choose. Timing (Timer control key): 3 choices timer running for 6 hours, or 10 hours, or 12 hours; Brightness/On-Off key: 10 level brightness and Switch function. Colour(W/B key): 3 colour modes choose, All lights on, White/Red/Green/Pink, Only Blue
[Full Spectrum Aquarium Light]: With full spectrum lighting, which is helpful fish and aquatic plants growth, suitable for all fresh water tanks. The controller is very simple and no complicated operations. Suitable for all starters to experienced fish tank lovers to use
[High-quality Led& High CRI]: Using high-quality SMD2835 led chips. 6500k white light, red light, pink light, green light and blue light, the light is very soft and beautiful, and the colour rendering index is up to 89%, which is similar to natural light
[5 columns of Led Chips, Extendable Metal Bracket]: Compared with other tank lights, up to 5 columns of led chips, they are more compact and beautiful. Good heat dissipation of the ABS shell. Use the stable and durable metal bracket, adjustable extendable bracket fit for most gallon tanks
[Application Size & Memory function]: The aquarium light fit for 48 inch-54 inch tank. In case of power failure, the setting remains the same as before, and the start time will restart counting after the power is turned on. PS: The light rises slowly in 15 minutes and gradually decreases in the last 15 minutes. It is very friendly to fish. You can easily to install this led fish tank light on most of glass or acrylic aquarium tanks, with transparent hood/lid or no, with rims or rimless

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8.6

SEAOURA

SEAOURA 24/7 Mode LED Aquarium Light for Plants - Sunrise to Moonlight, 7 Colors, Adjustable Timer/Brightness, 42W for 48-54 inch Tank

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Main Highlights

Experience natural lighting for your aquarium with this aquarium plant light that simulates the sun's cycle, starting with warm orange light in the morning and transitioning to bright full spectrum light at noon, then fading to orange light in the afternoon and finally to blue moonlight in the evening. With 16 time points to choose from, it's easy to find the perfect setting for your tank
SEAOURA Aquarium light with controller to setting Color, Brightness, Time and On/Off. With 8 color modes: Red, Blue, Green, Pink, Orange, Sea blue, Yellow, cycle, and full spectrum; 10 level Brightness (10%-20%-30%-40%-50%-60%-70%-80%-90%-100%) and 5 timer options (4 Hours, 6 hours, 8 Hours 10 hours, or 12 hours). No need to operation every day, very convenient. Warm tips: Cycle Color (No Brightness Option)
Upgrade your aquarium lighting with this advanced design that lets you PREVIEW the color and intensity of the light before setting it in the 24/7 cycle mode. With 5 columns of compact 5050 & 2835 led chips, this light provides 6500K white leds and full spectrum rgb leds comfortable and beautiful lighting that's similar to natural light. No strobe, it's gentle on the eyes and won't harm your fish
Never worry about power outages again with this planted tank light's power off memory function. In case of power failure, the 24/7 mode will start at 6 am and the timer mode will recalculate the setting time. Plus, with an IP68 waterproof rating and an ulra-thin aluminum alloy shell, this light is easy to clean and can withstand accidental falls into the water
Durable Aquarium Light: The fish aquarium light come with an extendable bendable metal bracket and an ultra-thin brushed aluminum alloy shell. this light is perfect for tanks between 48-54 inches and can support low-to-mid light level plant growth. It's also easy to install on most glass or acrylic aquarium tanks, with transparent hood/lid or no, with rims or rimless

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8.3

AQQA

AQQA LED Aquarium Light, 24/7 Mode IP68 Waterproof Extendable Bracket Fish Tank Light, DIY Mode Full Spectrum Aquarium Plant Light, Adjustable Timer/Brightness Memory Function for 40-48 Inch Fish Tank

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Main Highlights

HIGH QUALITY AQUARIUM LIGHT: Built in widened and thickened aluminum gloss shell is more beautiful and durable. Wider surface makes the heat dissipation effect of the light better. Premium 5050 and 2835 LEDs provide bright illumination for plants and fish, ehancing the aesthetic appeal of the fish tank.
DIY MODE: You could DIY modes as you like, there have switch that on/off button & change the light color or enter the color cycle & brightness & timer setting. 9 light colors available; 10 levels light brightness; 3 lighting timer setting choices (6H/10H/12H).
24/7 DEFAULT MODE: Simulate a 24-hour sunrise and sunset pattern to promote the growth of plant life, starting with warm orange light at sunrise, moving to 100% brighter full-spectrum light at noon, and then to starry blue light at night. The default light turns on automatically at 6 am and off at 23:00. The automatic on/off time can be postponed or advanced the overall default time period.
IP68 WATERPROOF AQUARIUM LIGHT: The highest level of waterproof ability could be directly soaked in water for use. Suitable for plants and freshwater: The full-spectrum bulbs can produce various colors depending on your preference.
EXCELLENT ALUMINUM ALLOY MATERIAL & EXTENDABLE BRACKET: High quality metal aluminum housing, easy to clean, fast heat dissipation. With 8 inch long bracket, makes the LED light to fit different-sized aquariums within an extendable range.

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8.1

hygger

hygger 42W 24/7 Lighting Aquarium LED Light, Sunrise-Daylight-Moonlight Mode and DIY Mode, Timer Adjustable Brightness Fish Tank Light with Extendable Bracket 7 Colors for Planted Tank

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Main Highlights

DEFAULT MODE(24/7 Natural Mode): Gradient Orange light (sunrise) from 6 am to 8 am; Gradient White light from 8 am to 6 pm; Gradient Blue light (moonlight) from 6 pm to 10:50 pm; The lights are off in other time periods. PS: The 6-time points on the controller are used as a reference for the first running time setting. In other words, the overall default time period can be delayed or advanced.
DIY MODE: Time + Color + Brightness can be set. Setting time(TIMER key): There are 3 choices, it can run for 6 hours, or 10 hours, or 12 hours; Brightness(/ key): 5 kinds of brightness. Color(ON-OFF/ M key): White, Red, Blue, Green, Purple, Orange, Cyan, PS: The light slowly ramps up and down in 15 minutes, then comes the brightness you set. Cycle Color (No Brightness Selection).
NEW UPGRADE: The separable adapter, if it is damaged, no need to replace the whole light to avoid waste. The extendable bending bracket can be adjusted in length and easy to install, and can be applied to various freshwater tanks. Thicken aluminum to increase heat dissipation efficiency. Power-off memory function, whether it is 24/7 mode or Time mode, other settings remain unchanged, only the start time changes, the default operation starts at 6 am.
HIGH-QUALITY LIGHT: The light is soft, the color rendering index is close to natural light, up to 85%, protecting eyes and fish, to refuse the discomfort caused by stroboscopic for fish and viewers. Using high-quality 2835 + 5050 model lamp beads, long service life, at least 50,000 hours. Lamp beads waterproof, the light is easy to clean and wipe, No need to worry even if it falls into the water briefly.
PRODUCT PARAMETERS: Power:42W; Led QTY:215PCS(White:105PCS/BLUE:43PCS/ RED:15PCS/GREE:9PCS/ RGB:43PCS); CRI:85; Application(for Fish Tnak Long):48-54 ; Power Cord: 5.9ft+2.3ft; Input Votage:AC100-240V; Output Votage:DC20V; Kelvin: White 6500K, Blue 455nm, Red 620nm, Green 560nm; Lumens:2815;

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8.1

SEAOURA

SEAOURA Plant Growth Aquarium Light, 24/7 Custom Timer, Power-Off Memory, 48-54in Full Spectrum Aquarium Plant Lights, 7-Row LED 8 Colors, 20 Adjustable Brightness, Day & Night Cycle for Freshwater

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Main Highlights

3 Modes with Custom Timer: DIY hour & minute of DAY mode, NIGHT mode, 24/7 mode. Seaoura aquarium light provide LED time clock display system allowing you to program a flexible automatic start & end lighting schedule of sunrise, daylight, sunset, moonlight and off. Simulate natural daily light for your tank based on the local time you set.
Time Memory Function: A replaceable battery is featured in the fish light controller to keep the passage of time even if the power is cut off unexpectedly. The aquarium planted light will follow the schedule timely when power restored after a tank cleansing or a blackout. No need to set and calibrate the timer repeatedly.
High Quality LEDs: 7 rows of 5050 + 2835 LED chips, Seaoura fish tank light provide full spectrum, red, green, blue, pink, purple, cyan, orange and color cycle, total 9 color optionswith 20 levels of dimmable brightness. Up to 90% light through PC surface ensuring the aquarium is evenly illuminated. CRI:92, PAR:181, Lux:10685, Lumen:2899, Color Temp: White 12600K, Power:48W, LED QTY:294Pcs(W:196Pcs/R:14Pcs/G:14Pcs/B:28Pcs/RGB:42Pcs)
Ideal for Aquarium Plants Growth: Seaoura LED Aquarium Light bathing your freshwater aquarium. High PAR value and reasonable blue and red light wavelength make the aquarium light better for aquatic plants to photosynthesize. Custom timer programmable control the light up the aquarium adapt to local time. A 15-min brightness gradient is set between light stages to avoid startle the fish.
Taller Extendable Bracket: Seaoura aquarium lights came with adjustable mount, application size: 48'' to 54'', fit the light on 50 gallon to 120 gallon fish tanks. The taller stand design ensures the light covers every corner of the aquarium while extending its service life. Cable Length: 8.2ft.
IP68 Waterproof: Seaoura aquarium planted light is easy to maintain and wipe clean featuring a IP68 waterproof light body. Combined aluminum shell and PC material brings better water and heat resistance to the lights body. Solid and durable for 24/7 routine.

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Our Best Overall Choice

Best Choice

9.7

AQUANEAT

AQUANEAT LED Aquarium Light Full Spectrum for 18 Inch to 24 Inch Fish Tank Light Fresh Water

10% OffFree Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Fits aquarium tank up to 10 gal from 18" to 24" in length with adjustable mounting brackets
Light body without docking brackets: 17 L x 2.7 W. Tank thickness: No limit to rim size
Configuration: Total 42 LEDs, 30 pcs 6500K white LED, 6pcs blue LED, 3 pcs pink LED, 3 pcs Green LED
Mode: all lights on and all lights off
Super bright and energy efficient LEDs, suitable for all freshwater NOTE KEEP THE LIGHT AWAY FROM THE SPLASHING WATER

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