10 Best Aquarium Light for 20 Gallon Long in 2022 – [Top Picks]

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We are so glad that you found us! We are dedicated to helping you find the best aquarium light for 20 gallon long. We scoured online databases, forums, and real user reviews for hours to find the highest-rated products available today.

Our top picks are of high quality and have received high ratings from users so that you can be confident in their abilities! So, let’s check out the top picks.

6% OffEDITOR'S CHOICE
AQUANEAT LED Aquarium Light Full Spectrum for 18 Inch to 24 Inch Fish Tank Light Fresh Water Light Multi-Color
  • Fits aquarium tank 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

Top 10 Aquarium Light for 20 Gallon Long – [Highly Rated]


10 Best Aquarium Light for 20 Gallon Long – [Editor’s Recommendations]

6% OffOUR #1 PICK
AQUANEAT LED Aquarium Light Full Spectrum for 18 Inch to 24 Inch Fish Tank Light Fresh Water Light Multi-Color
  • Fits aquarium tank 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
OUR #2 PICK
hygger 14W Full Spectrum Aquarium Light with Aluminum Alloy Shell Extendable Brackets, White Blue Red LEDs, External Controller, for Freshwater Fish Tank (18-24 inch)
  • 🐠【Ultra Bright Led Light】this aquarium led light is DC12V/14W, 5730 large leds, super bright, makes the aquarium water look more sparkly clean.Suggest for fish tank 18 inch to 24 inch in width, support low-to-mid light level plant growth. Input: AC100-240V/60HZ. Suitable for freshwater aquarium, not for saltwater use
  • 🐠【Adjustable Brackets】the fish tank light comes with 2 metal and 2 plastic mounting brackets, which are both freely extendable. You can easily to install this led fish tank light on most aquarium tanks, with cover or no, with rims or rimless
  • 🐠【3 Light Color Modes】this aquarium light has 3 light modes: White LEDS, Blue+white+red LEDS, Red+ blue LEDS, it's very easy to shift the color by press the second button for 1 to 3 times on the controller. Color changes will make your one aquarium change to 3 different wonderful views
  • 🐠【Brightness & Timing】 you can adjust the light brightness from 100% to 10% according to your prefer or the light needs of the plants, 5 levels of brightness in total. Besides, on the external controller, you can set the lighting time to 3, 6 or 12 hours by pressing the third button for 1 to 3 times
  • 🐠【Durable Aquarium Light】low profile mounting bracket fish tank light, with aluminum alloy metal shell,has a nice feel and fast heat dissipation. With high-quality leds, energy efficient, can last up to 20000 hours of lighting
OUR #3 PICK
NICREW ClassicLED Gen 2 Aquarium Light, Dimmable LED Fish Tank Light with 2-Channel Control, White and Blue LEDs, High Output, Size 12 to 18 Inch, 11 Watts
  • Super bright 6500K White LEDs with optimized spectrum 460nm Blue LEDs for healthy growth of plants
  • More LEDs offer a higher level of luminous efficiency and brightness, 50% brighter than before
  • Adjustment can be made for both brightness and color temperature. Very easy to lower the blue lights for a more warm look, or use high blues and low whites for a cool even look
  • Build in 8/10/12H Timer and 15 minute ramp up / dim down. Set it, and forget it. The gradual lighting increase when turning on and the gradual lighting decrease when turning off does lend a feeling of being more in nature, avoiding startling your fish
  • Ideal for freshwater or saltwater fish-only and low-high light level aquarium plants, for aquariums 12 - 18in (recommended for use over glass or acrylic canopy-covered aquariums)
48% OffOUR #4 PICK
AQQA Aquarium Light,Full Spectrum LED Fish Tank Lights,12"-54" Adjustable Multi-Color White Blue Red Green LEDs with Extendable Brackets,14W-31W for Freshwater Plants 14W(12"-18")
  • 🍀🐟【14W Classic Aquarium Light】14W light suitable 12inch-18inch fish tank,input votage is AC100-240V,Output votage is DC24-72V,40pcs LEDs(White-24pcs Blue-6pcs Red-6pcs Green-4pcs),Power cord is 5.9ft(1.8m),Lumen is 773lm ,Kelvin is 6500K white LED
  • 🍀🐟【3 Color Light Modes,Independent Controller】3 light modes can be set:①White ②2 rows light White+Blue+Red+Green ③4 rows lightWhite+Blue+Red+Green,Press the switch once to turn on white light, press the switch again to turn off the light, press the switch for the third time to turn on mode 2 white+blue, press again to turn off the light, press the switch for the fifth time to turn on mode 3 white+blue+red+green,and that cycle repeats.Notes: this light cannot be fixed mode.
  • 🍀🐟【5730 LEDs Fish Tank Light,High-definition Translucent】All use 5730 high-brightness lamp beads,high color rendering,high clarity and transparency,bright colors.The light goes directly to the bottom of the fish tank, making the fish tank more translucent and more ornamental,restoration of primay colors of fish and aquatic plants,closer to nature visual enjoyment.can last up to 20000 hours of lighting.
  • 🍀🐟【4 Rows of Lamp Beads,Adjustable Extendable Bracket】Compared with ordinary lights, the widened panel, 4 rows of lamp beads, thicker height, speed up the heat dissipation of the lamp.Use 3.5mm diameter stainless steel bracket,Stable and durable,adjustable Extendable bracket can fit most fish tanks,Please choose the right fish tank light according to the length of the fish tank.
  • 🍀🐟【Full Spectrum Brightness,Sutable for Freshwater Plants】full specturm ratio for aquarium,make aquatic plants more comprehensive photosynthesis and color development, which is helpful for plant growth and viewing.
14% OffOUR #5 PICK
hygger Clip On 24/7 Lighting Aquarium LED Light, 14W Sunrise-Daylight-Moonlight Mode and DIY Mode, Adjustable Timer Adjustable Brightness Fish Tank Light with 7 Colors for Planted Tank
  • 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. ①Setting time(TIMER key): 3 kinds of time, 6h, or 10h, or 12h; ②Brightness(🔺/🔻 key): 5 kinds of brightness. ③Color(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.
  • HIGH-QUALITY 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: ①Power:14W; ②Led QTY:68PCS(White:32PCS/BLUE:12PCS/ RED:7PCS/GREE:3PCS/ RGB:14PCS); ③CRI:85; ④Application(for Fish Tnak long):12’’-20’’ ; ⑥Power Cord: 4.9ft+2.3ft; ⑦Input Votage:AC100-240V; ⑧Output Votage:DC20V; ⑨Kelvin: White 6500K, Blue 455nm, Red 620nm, Green 560nm; ⑩Lumens:817;
15% OffOUR #6 PICK
hygger 18W 24/7 Lighting Aquarium LED Light, Sunrise-Daylight-Moonlight Mode and DIY Mode, Adjustable Timer Adjustable Brightness Fish Tank Light with Extendable Bracket 7 Colors for Planted Tank
  • 🦐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. ①Setting time(TIMER key): There are 3 choices, it can run for 6 hours, or 10 hours, or 12 hours; ②Brightness(🔺/🔻 key): 5 kinds of brightness. ③Color(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: ①Power:18W; ②Led QTY:98PCS(White:48PCS/BLUE:18PCS/ RED:7PCS/GREE:5PCS/ RGB:20PCS); ③CRI:85; ④Application(for Fish Tnak Long):18”-24” ; ⑥Power Cord: 4.9ft+2.3ft; ⑦Input Votage:AC100-240V; ⑧Output Votage:DC20V; ⑨Kelvin: White 6500K, Blue 455nm, Red 620nm, Green 560nm; ⑩Lumens:1075;
6% OffOUR #7 PICK
AQUANEAT LED Aquarium Light Blue and White for 18 Inch to 24 Inch Fish Tank Light Fresh Water Light
  • Fits aquarium tank 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, 36pcs 6500K white LED, 6pcs blue 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
OUR #8 PICK
GloFish Cycle Light, 1 Count, For Aquariums Up To 20 Gallons, 4 Modes With White, Blue And Black LED Lights (29291)
  • GLOFISH CYCLE LIGHT Easily convert an aquarium into a stunning home for your GloFish fluorescent fish
  • FOUR LIGHT MODES Change between sunlight (white and blue LED lights on) moonlight (blue LEDs only) midnight (black LEDs only) and twilight (blue and black LEDs)
  • SIZES Available in three sizes – for tanks up to 5 gallons for tanks up to 20 gallons and for tanks up to 75 gallons
  • EXPERIENCE THE GLO GloFish fluorescent fish and products create a complete underwater fluorescent experience
  • Included Components: 1 X Glofish Cycle Light, 1 Count
OUR #9 PICK
Aqueon Freshwater Aquarium Clip-On LED Light One Size
  • Easily mounts on framed or frameless aquariums using the versatile mounting screw
  • 21 bright LEDs for shimmering illumination
  • Elegant super thin design keeps the focus on your aquarium
  • Ideal for freshwater aquariums up to 20 gallons
  • 2-way soft-touch LED control (on/off)
OUR #10 PICK
AQQA LED Aquarium Light Full Spectrum Fish Tank Light with Extendable Brackets 12" 18" 24" 32“ 36" 48" White Blue Red Green LEDs Multi-Color 3 Modes Light for Freshwater Planted Tank
  • 【Full Spectrum Aquarium Light, Easy to Use】Full-spectrum lighting, is helpful for the growth of fish and aquatic plants, suitable for all freshwater tanks. The setup is very simple and there are no complicated operations. Suitable for all people to use, from starters to experienced fish lovers. 3 adjustable modes: ①All lights on; ②White/Red/Blue/Green; ③Only white.
  • 【Independent Controller, Cyclically Switch 3 Modes】The cycle button on the external controller allows you to turn on, off, and switch light modes without unplugging the fish tank light, which is very simple and convenient. But please note: This fish tank light cannot fix the mode after unplugging and restarting!
  • 【5730 LED Lamp Beads, Brighter and More Stable】The widened light board and 4 rows of lamp beads make the lighting range of the aquarium light wider. Made of 5730 super bright LED lamp beads, high color rendering and excellent penetrating power, restore the natural colors of fish and aquatic plants, giving you an excellent viewing effect.
  • 【High-quality PVC Shell, Better Heat Dissipation】The widened and thickened PVC gloss shell is more beautiful and durable. Wider surface makes the heat dissipation effect of the light better. The light board is sealed with resin, which can effectively reduce the damage of water vapor to the aquarium light. But be careful: Do not immerse the fish tank light in the water.
  • 【Extendable Bracket, Wide Applicability】Equipped with 3.5mm diameter extendable stainless steel bracket, which allows the fish tank light can be perfectly adapted to tanks of different sizes. There are 6 different sizes (12"/18"/24"/32"/36"/48"), please check the size chart to find your desired fish tank light.

How to Choose the Best Aquarium Light for 20 Gallon Long?

When it comes to purchasing aquarium light for 20 gallon long, there are a lot of factors to consider. With so many choices on the market, it can be tough to decide what to buy. However, by keeping the following factors in mind, you can make your next purchase with confidence.

1. Price

One of the most important factors to consider when purchasing aquarium light for 20 gallon long is the price. Not only should you consider the cost of the product, but also the cost of shipping and handling. It is important to compare prices between different retailers so that you can find the best deal.

2. Features

When looking at aquarium light for 20 gallon long, it is important to read the description carefully. This will give you a good idea of what the product is and how it works. It is also important to consider the features of the product. Some products have more features than others, and these features may be important to you.

3. Reviews

It is always helpful to read reviews before you buy aquarium light for 20 gallon long. This will give you an idea of how other people have used the product and what their thoughts are. Additionally, reviews can help you make a more informed decision about the aquarium light for 20 gallon long.

4. Comparisons

If you are looking for a specific aquarium light for 20 gallon long, it is helpful to look at similar products to see if they are cheaper or better quality. This can help you make a decision without having to spend a lot of time researching the matter. It is also helpful to talk to friends and family members who may have found a good deal on a certain product.

5. Brands

One of the most important factors to consider when purchasing aquarium light for 20 gallon long is the manufacturer. Make sure you are buying from a reputable brand that you can trust. There are a lot of companies that make low quality products. They might not last as long as you would like, or they might not function as they are supposed to.

6. Warranty

When purchasing aquarium light for 20 gallon long, it is always important to consider the warranty. This will give you peace of mind in case something goes wrong with the product. If the product has a warranty, make sure to read the terms and conditions carefully.


Final Words

So there you have it! We hope our research and hard work have helped you find the best aquarium light for 20 gallon long. If you have any questions, feel free to contact us, and we’ll sort it out for you.

6% OffEDITOR'S CHOICE
AQUANEAT LED Aquarium Light Full Spectrum for 18 Inch to 24 Inch Fish Tank Light Fresh Water Light Multi-Color
  • Fits aquarium tank 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