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  15. Top 10 Best 20 Gallon Fish Tanks

Top 10 Best 20 Gallon Fish Tanks

- August 2019

Results based on 2339 Reviews

Score
Top Choice
1
Perfecto All Glass Aquarium Tank44; 20 Gallon Perfecto
Perfecto
Perfecto All Glass Aquarium Tank44; 20 Gallon
  • MPN: 571952
  • Part Number: 571952
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2
Marina Aquarium Kit - 20 gallon Fish Tank - LED Rolf C. Hagen (USA) Corp.
Rolf C. Hagen (USA) Corp.
Marina Aquarium Kit - 20 gallon Fish Tank - LED
  • 20 U.S. gallon glass aquarium
  • Includes a Marina Slim S20 clip on filter with quick change filter cartridges
  • Includes everything you need to get your aquatic home started
  • Measures: 24 inches L x 12.5 inches W x 16.5 inches H
  • EAN: 0015561152662
  • UPC: 015561152662
  • MPN: 15266A1
  • Model Number: 15266A1
  • Part Number: 15266A1
  • Size: 20 gallon
  • Height: 1900 hundredths-inches
  • Width: 1500 hundredths-inches
  • Length: 2630 hundredths-inches
  • Width: 1500 hundredths-inches
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3
Hagen HG Fluval Flex Aquarium 57L, 15gal, Black Hagen
Hagen
Hagen HG Fluval Flex Aquarium 57L, 15gal, Black
  • 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.
  • EAN: 0015561150064
  • UPC: 015561150064
  • MPN: AHG15006
  • Model Number: AHG15006
  • Part Number: AHG15006
  • Size: 15 Gallon
  • Warrenty: Manufacturer Warranty
  • Height: 39 hundredths-inches
  • Width: 39 hundredths-inches
  • Length: 39 hundredths-inches
  • Width: 39 hundredths-inches
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4
Tetra Deluxe Aquatic Turtle Kit, 20-Gallon, 30 x 12 x 12-Inches Spectrum Brands Pet, LLC
Spectrum Brands Pet, LLC
Tetra Deluxe Aquatic Turtle Kit, 20-Gallon, 30 x 12 x 12-Inches
  • This kit includes all the essentials needed for success, such as: a decorative filter, cartridges, basking platform, heating lamps, boxwood plant mat and screen top
  • The Decorative ReptoFilter instantly creates a beautiful waterfall and basking area, while providing three-stage filtration
  • Two dome lamps are located in the screen above the tank for warmth and prime basking
  • This 20 gallon tank measures 30" x 12" x 12". ReptoMin Baby Floating Food Stick and AquaSafe samples
  • Let your reptile bask in the light as your terrarium becomes the focal point of any room
  • EAN: 0047497332306
  • UPC: 047497332306
  • MPN: NV33230
  • Model Number: NV33230
  • Part Number: NV33230
  • Warrenty: See label for details
  • Height: 1769 hundredths-inches
  • Width: 1581 hundredths-inches
  • Length: 3393 hundredths-inches
  • Width: 1581 hundredths-inches
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5
Aqueon Aquarium Fish Tank Central Aquatics
Central Aquatics
Aqueon Aquarium Fish Tank
  • Ships in own container with reinforced packaging to protect product
  • Black trim design with clear silicone seals
  • Suitable for freshwater or marine inhabitants
  • Aquarium measures 20-1/4" X 10-1/2" X 12-9/16"
  • Made in the USA
  • EAN: 0015905000260
  • UPC: 015905000260
  • MPN: 100528607
  • Model Number: 100528607
  • Part Number: 100528607
  • Size: 10 gallon
  • Warrenty: 90 Days
  • Height: 1300 hundredths-inches
  • Width: 1050 hundredths-inches
  • Length: 2025 hundredths-inches
  • Width: 1050 hundredths-inches
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6
SeaClear 29 gal Show Acrylic Aquarium Combo Set, 30 by 12 by 18, Clear Pet Partners dba North American Pet
Pet Partners dba North American Pet
SeaClear 29 gal Show Acrylic Aquarium Combo Set, 30 by 12 by 18", Clear
  • Combo includes aquarium, reflector and electrical 24" light fixture
  • Acrylic aquariums are clearer than glass, 17 times stronger, and only half the weight!
  • More impact resistant and less prone to chipping or cracking than glass, making it safer around children and pets
  • Safe for Salt or Freshwater
  • You won't believe how your fish and decorations will pop when viewing this beautiful SeaClear aquarium
  • EAN: 0019034122909
  • UPC: 019034122909
  • MPN: X1010012290
  • Model Number: X1010012290
  • Part Number: X1010012290
  • Size: 30 by 12 by 18"
  • Height: 1800 hundredths-inches
  • Width: 1200 hundredths-inches
  • Length: 3000 hundredths-inches
  • Width: 1200 hundredths-inches
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7
SeaClear 26 gal Flat Back Hexagon Acrylic Aquarium Combo Set, 36 by 12 by 16, Clear Pet Partners dba North American Pet
Pet Partners dba North American Pet
SeaClear 26 gal Flat Back Hexagon Acrylic Aquarium Combo Set, 36 by 12 by 16", Clear
  • Combo includes aquarium, reflector and electrical 24" light fixture
  • Acrylic aquariums are clearer than glass, 17 times stronger, and only half the weight!
  • More impact resistant and less prone to chipping or cracking than glass, making it safer around children and pets
  • Safe for Salt and Freshwater
  • You won't believe how your fish and decorations will pop when viewing this beautiful SeaClear aquarium
  • EAN: 0019034352603
  • UPC: 019034352603
  • MPN: X1010035260
  • Model Number: X1010035260
  • Part Number: X1010035260
  • Size: 36 by 12 by 16"
  • Height: 1600 hundredths-inches
  • Width: 1200 hundredths-inches
  • Length: 3600 hundredths-inches
  • Width: 1200 hundredths-inches
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8
SeaClear 20 gal Acrylic Aquarium Combo Set, 24 by 13 by 16, Clear Pet Partners dba North American Pet
Pet Partners dba North American Pet
SeaClear 20 gal Acrylic Aquarium Combo Set, 24 by 13 by 16", Clear
  • Combo includes aquarium, reflector and electrical 15" light fixture
  • Acrylic aquariums are clearer than glass, 17 times stronger, and only half the weight!
  • More impact resistant and less prone to chipping or cracking than glass, making it safer around children and pets
  • Safe for Salt or Freshwater
  • You won't believe how your fish and decorations will pop when viewing this beautiful SeaClear aquarium
  • EAN: 0019034122008
  • UPC: 019034122008
  • MPN: X1010012200
  • Model Number: X1010012200
  • Part Number: X1010012200
  • Size: 24 by 13 by 16"
  • Height: 1600 hundredths-inches
  • Width: 1300 hundredths-inches
  • Length: 2400 hundredths-inches
  • Width: 1300 hundredths-inches
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9
GloFish 20 Gallon Aquarium Kit with LED Lights, Decor Heater and Filter United Pet Group
United Pet Group
GloFish 20 Gallon Aquarium Kit with LED Lights, Decor Heater and Filter
  • 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
  • EAN: 0047497338230
  • UPC: 047497338230
  • MPN: NV33823
  • Model Number: NV33823
  • Part Number: NV33823
  • Size: 20-Gallon
  • Warrenty: see label / insert
  • Height: 2038 hundredths-inches
  • Width: 1613 hundredths-inches
  • Length: 2788 hundredths-inches
  • Width: 1613 hundredths-inches
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10
Aqueon Fish Tank Aquarium LED Kit, 10 Gallon Central Aquatics
Central Aquatics
Aqueon Fish Tank Aquarium LED Kit, 10 Gallon
  • 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: 10 gallon glass aquarium, low profile LED full hood, QuietFlow 10 LED PRO power filter with medium cartridge, 50W preset heater, premium fish food, water conditioner, fish net, stick-on thermometer
  • EAN: 0015905000109
  • UPC: 015905000109
  • MPN: 100527256
  • Model Number: 100527256
  • Part Number: 100527256
  • Size: 10 gallon
  • Warrenty: Not Applicable
  • Height: 1331 hundredths-inches
  • Width: 1050 hundredths-inches
  • Length: 2025 hundredths-inches
  • Width: 1050 hundredths-inches
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Best 20 Gallon Fish Tank Reviews

 

Have a pet allergy? Don't want to clean pet hair off of your furniture for the next 20 years? A fish might be a wonderful companion to consider. Fish are the perfect pets for an apartment that doesn't allow cats and dogs and a great addition to a home already filled with other furry friends. Often after someone's first experience with a pet fish, they're hooked and ready to fill their home with other species. However, the more fish you adopt, the more space your fishy friends need. Check out a 20 gallon fish tank or 20 gallon aquarium kit if you're ready to grow your fish family!

 

See also:

 

Best Beginner 20 Gallon Aquarium Kit

 

Marina LED Aquarium Kit

 

If you've been interested in becoming a pet fish owner for some time with no idea where to start, look no further than the Marina LED Aquarium Kit. A perfect kit for beginners, this aquarium start-up set comes with a 20 gallon glass tank, a slip-on filter with filter cartridges, and even a guide to help you get started with your first fishy family. Plus, you'll get this combo kit at an unbelievable value price! 

 

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Best Expert 20 Gallon Fish Tank

 

SeaClear Acrylic Aquarium Combo Set

 

Have you been building your very own school and developing your passion for pet fish for some time now? The Marina LED Aquarium Kit might be perfect for a beginner, but the SeaClear 26 Gallon Hexagon Acrylic Aquarium Combo Set makes an incredible tank for the seasoned fish caretaker. Acrylic panes make this fish tank half the weight of traditional glass and more than 10 times stronger. Plus, fish-owning experts love that it's clearer than any glass tank they've ever owned. 

 

If you've got kids or other curious furry friends roaming around the house, this tank is a perfect addition; acrylic panes are impact resistant, making it safer to use around other kids and critters. SeaClear makes the perfect tank for anyone looking to expand their fish family!

 

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Best Value 20 Gallon Aquarium

 

Another great beginner kit, the Aqueon Fish Aquarium Starter Kit is a fantastic value; it comes with detailed instructions about set-up and a variety of tank decorations like gravel and plants. With this kit, guesswork is eliminated. All you have to do is decide what kind of fish to keep! Plus, this tank is value priced as well, so any aspiring fish owner can begin their hobby without breaking the bank (or breaking the "tank," if you will). Enjoy your aquatic roommates!

 

Aqueon Fish Aquarium Starter Kits LED NeoGlow

 

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Fish for 20 Gallon Tank

 

If you're a newbie to the aquatic pet game, you might not know that you can't just stock any size tank with however many fish you want. Just like people, different kinds of fish have a different set of needs. You'll need to meet them to keep them happy and healthy. If you're interested in a decently sized 20 gallon tank to display your new pets, here's a quick beginner's guide to how many and what kinds of fish you can stock it with.

 

As a rule of thumb, you should have one gallon of water for every one inch of fish. With this in mind, it's heartbreaking to think about how many fish pet stores pack into one small tank for display. However, take a commonsense approach to this rule. Obviously, putting five one-inch fish in a five gallon tank is a lot different from putting one five-inch fish in the same tank. Don't make your fish suffer being jam-packed into one tank.

 

Before you decide on what kinds of fish you want, take into consideration the following factors:

 

Temperament. Different breeds have different personalities. If you're interested in keeping a larger number of fish, consider a type that enjoys swimming in a community. Keep in mind that some breeds are more aggressive than others.

Size. Often, a larger fish will eat smaller fish. If you value the lives and happiness of your itty bitty pals, don't put them in a tank with a fish twice their size.

Growth. Just like people, the baby fish you first get will grow eventually. Your fish might be one inch now, but it could eventually outgrow a tank.

Tank decor. More plants and décor take up space that your fish will need. Make sure to get a larger tank than you think you might need if you're particularly fond of décor.

 

With those guidelines in mind, here's the top 3 best fish for a 20 gallon long aquarium.

 

Tetra

 

A small fish with two black fins.

 

Tetra are small fish that enjoy a community lifestyle and are pretty easy to maintain. They get along well with other mild-tempered fish, and larger breeds of tetra coexist well with smaller breeds in the same tank. Tetra appreciate company of the same variety (aim for at least 5).

 

Cory Catfish

 

A green corydora catfish skimming gravel in a tank.

 

Corydoras are small bottom-feeding fish that help to keep your tank clean. They do this by eating up leftover food that falls to the bottom of the tank that could cause algae build-up. This is another breed that enjoys living with a few members of its own kind. 

 

Platy

 

An orange sunburst Platy fish.

 

Platies are a perfect, playful fish to add to your 20 gallon fish tank. Just like the other fish on our list, Platies are ideal for a community tank and are great for beginners due to their easy care regimen. 

 

On top of these favorable varieties for this size aquarium, consider adding in other aquatic-dwelling creatures like snails or shrimp for a beautiful variety. Happy fish-keeping!

 

Disclaimers
Disclaimers: At the time of writing, prices and ratings are correct and products are in stock at Amazon. The views and opinions expressed in this article are those of the authors and do not necessarily reflect the official policy or position of the site owner or any brands and companies mentioned here. This article is purely for reference purposes and does not constitute professional advice and may not be reflective of the best choice for your unique situation. This site strives to provide as much accurate information as possible; however, sometimes products, prices, and other details are subject to change. Therefore, this site does not verify for the accuracy of the information presented in this article. This site does not assume any liability for any sort of damages arising from your use of this site and any third party content and services.


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