10 Best 20 Gallon Fish Tanks

Last Updated September 2020 Based on 2804 Reviews
1 Best of the Best!
H2Pro 30' Glass Canopy 20 Long/29 Gallon Aquarium Fish Tank (29.21 x 11.69 x 0.16in)
H2Pro H2Pro 30" Glass Canopy 20 Long/29 Gallon Aquarium Fish Tank (29.21 x 11.69 x 0.16in)
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9.6 Greet
Product Highlights
  • Fits most 20Long/29 gallon Fish tanks (marine land & perfecto). there are different Aquarium manufactures. Please measure your Tank opening to the closest millimeter before purchasing!
  • Dimensions: 29.21 x 11.69 x 0.16in (74.2 x 23.2 x 0.4cm)
  • Features new and improved tempered glass; durable and reduces evaporation
  • Clear Plastic back strip that can be cut to fit your Aquarium
  • Provides the area for your Lighting to sit while allowing simple access to your Aquarium
2
Tetra LED Hood 20 Inches by 10 Inches, Low-Profile Aquarium Hood with Hidden Lighting
Tetra Tetra LED Hood 20 Inches by 10 Inches, Low-Profile Aquarium Hood with Hidden Lighting
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9.5 Greet
Product Highlights
  • aquarium HOOD WITH LEDS: Low-profile, hinged hood houses white LED lights that create a natural underwater shimmer effect.
  • ENERGY EFFICIENT: Built-in LEDs - no bulbs to replace.
  • FILTER COMPATIBLE: Cutouts in the back of the hood can accommodate a variety of filters.
  • RANGE OF SIZES: Tetra LED Hoods are available in multiple sizes to accommodate most rectangular tanks.
  • SIZE: Measures 20 inches wide by 10 inches deep.
3
Aqueon Aquarium Fish Tank Kit, 20 gallon
Aqueon Aqueon Aquarium Fish Tank Kit, 20 gallon
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9.4 Greet
Product Highlights
  • Low profile full hood contains vibrant cool white LED lighting to bring your aquatic environment to life
  • QuietFlow 10 LED PRO power filter has a red LED light that flashes to indicate when it's time to change the cartridge - no more guessing!
  • Preset heater will keep your aquarium temperature at a constant 78 degrees, appropriate for most tropical fish
  • Complete setup guide included
  • Complete aquarium kit includes: 20 gallon glass aquarium, low profile LED full hood, QuietFlow 10 LED PRO power filter with medium cartridge, 100W preset heater, premium fish food, water conditioner, fish net, stick-on thermometer
4
Ameriwood Home Flipper 10/20 Gallon Aquarium Stand, Black Oak
Ameriwood Home Ameriwood Home Flipper 10/20 Gallon Aquarium Stand, Black Oak
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9 Greet
Product Highlights
  • Keep your aquarium size options open with the help of the Ameriwood Home Flipper 10/20 Gallon Aquarium Stand
  • Unique patent design can support a 10 gallon stand on one end or a 20 gallon stand on the opposite end
  • Stand supports 10 gallons and up to 120 lbs. or 20 gallon tanks up to 240 lbs. - tank not included
  • Laminated MDF and particleboard
  • Use the top open and bottom open cubbies to display home décor or photos
  • This item comes with two different top shelves. - The small shelf part B holds up to 120 lbs and the large shelf part C holds up to 240 lbs
5
H2Pro 24' Glass Canopy 15/20/ 55-Gallon Aquarium Fish Tank (23.07 x 11.69 x 0.16in)
H2Pro H2Pro 24" Glass Canopy 15/20/ 55-Gallon Aquarium Fish Tank (23.07 x 11.69 x 0.16in)
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8.9 Very good
Product Highlights
  • Fits 15/20H/55 gallon Fish tanks (marine land & perfecto). there are different Aquarium manufactures. Please measure your Tank opening to the closest millimeter before purchasing!
  • Dimensions: 23.07 x 11.69 x 0.16in (58.6 x 23.2 x 0.4cm)
  • Features new and improved tempered glass; durable and reduces evaporation
  • Clear Plastic back strip that can be cut to fit your Aquarium
  • Provides the area for your Lighting to sit while allowing simple access to your Aquarium
6
Tetra Whisper Air Pump 20 To 40 Gallons, For aquariums, Powerful Airflow, Non-UL Listed
Tetra Tetra Whisper Air Pump 20 To 40 Gallons, For aquariums, Powerful Airflow, Non-UL Listed
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8.8 Very good
Product Highlights
  • POWERFUL: Tetra Whisper Air Pump provides dependable airflow to your aquarium.
  • QUIET: Patented dome shape, suspended motor and sound-dampening chambers for quiet operation.
  • AVAILABLE SIZES: Select the proper size for your tank - 10, 20 and 40-gallon pumps have single air outlets, 60 and 100-gallon pumps feature dual outlets.
  • NON-UL LISTED: Reliable performance at an economical cost.
7
Tetra ColorFusion Aquarium 20 Gallon Fish Tank Kit, Includes LED Lighting and Decor
Tetra Tetra ColorFusion Aquarium 20 Gallon Fish Tank Kit, Includes LED Lighting and Decor
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8.7 Very good
Product Highlights
  • Let the LED light transform your aquarium with each color change. Pause the cycle on any color to fully customize your aquarium
  • The anemones sway with your filter current and give your fish a place to hide and relax
  • Tetra plants come to life under the glow of Color Fusion LED
  • The Tetra ColorFusion Kit includes: one 20 Glass gallon Aquarium, one aquarium hood, one UL Heater, one Tetra Whisper 20 Filter, one Color Fusion Universal Color Changing LED, two Wonderland Plant Multipacks, one Blooming White Anemone
  • Aquarium Dimensions:24.2" L x 12.4" W x 16.7" H
8
GloFish 20 Gallon Aquarium Kit with LED Lights, Decor Heater and Filter
GloFish GloFish 20 Gallon Aquarium Kit with LED Lights, Decor Heater and Filter
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8.6 Very good
Product Highlights
  • INCLUDES ALL THE ESSENTIALS FOR SUCCESS: This GloFish aquarium kit includes a 20 gallon glass aquarium, LED hood, Tetra mini UL heater, Tetra Whisper 20 filter, GloFish 13" LED light stick, 1 GloFish yellow anemone, 2 plant multipacks, fish food and water conditioner sample as well as a set-up guide.
  • BLUE LED LIGHTING TRANSFORMS YOUR AQUARIUM: The blue LED light completely transforms your aquarium. GloFish and GloFish d?cor fluoresce, creating a colorful, neon display.
  • COMPLETE THE LOOK WITH COLORFUL ADDITIONS: Complete the look by adding pops of color among any gravel you choose with the varying plant sizes and colors included.
  • DIMENSIONS: The 20 Gallon Aquarium dimensions are 24.2" L x 12.5" W x 16.2" H
9
Hagen HG Fluval Flex Aquarium 57L, 15gal, Black
Hagen Hagen HG Fluval Flex Aquarium 57L, 15gal, Black
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8.4 Very good
Product Highlights
  • Item Package Height: 30.0
  • Item Package Length: 35.0
  • Item Package Width: 40.0
  • The Fluval 15 gallon flex freshwater kit is one of very few freshwater aquarium Kits to incorporate brilliant illumination and multistage filtration with convenient Aquarium features and contemporary design. Your aquatic atmosphere will stand out with 48 white and 6 RGB fully adjustable 2450 lux LEDs shimmering over your fish and plants, while the 7500K LED lamp promotes Plant growth. Choose from this endless selection of color blends and the special effects options, all controlled from your included flexpad remote control. This is a fully fledged glass tank, and there is an infrared remote sensor that is neatly integrated and accessible on the canopy.To achieve superior water quality, powerful 3-stage filtration is included with oversized mechanical (foam), chemical (carbon), and biological (BioMax) media. The multi-directional 132 GPH dual outputs allow customized water flow, All hidden nicely in the rear compartment.This Aquarium features a unique curved front, creating the illusion of a larger aquatic environment and modern look to suit any room in your home or office. The water line of the rear compartment remains hidden with the stylish Honeycomb wrap. This assures your entire Aquarium looks sleek and clean. To finish this brilliant design, Enjoy the freedom of feeding your fish through the feed top cover opening.
10
Marineland Portrait Glass LED aquarium Kit, 5 Gallons, Hidden Filtration
MarineLand Marineland Portrait Glass LED aquarium Kit, 5 Gallons, Hidden Filtration
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8.3 Very good
Product Highlights
  • SLEEK DESIGN: Rounded corners and clear glass canopy allow viewing from multiple angles.
  • DAYLIGHT/MOONLIGHT LIGHTING: Bright white LEDs create a shimmering sunlight effect; blue LEDs produce a moonlit glow.
  • EASY ACCESS: Hinged LED lighting and sliding glass canopy.
  • SIZE: 5-gallon aquarium fits Marineland Rite-Size Z Filter Cartridges.

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