Best 20 gallon aquarium 2018 reviews and buying guide

Let's take a look at some 20 gallon aquarium starter kits that make getting into keeping aquariums a little easier.

best 20 gallon aquarium

When starting out in the journey of keeping aquariums a starter kit is a very good option. Even more so for younger people that would like to start out.

As you get the items you need to get started. It can be overwhelming making sure you have the right filtration system or heating system. A 20 gallon starter kit takes care of what you need. So check out our best 20 gallon aquarium reviews.

Best 20 gallon aquarium reviews comparison table

What size aquarium should you purchase?

It depends, of course, on how much space is available and how much money there is to spend. The best sizes for an initial community tank are 20 gallons to 40 gallons. There is a rule of thumb that holds that the smaller the tank, the more difficult it is to properly maintain. Although the most popular size aquarium is the 10 gallon​​​, it is really too small to function as a typical community tank.

A 30 gallon aquarium is a good choice, but the cost factor must be considered. As a consumer, the size is up to you. You must be satisfied with your selection. While a 10 gallon aquarium is more difficult to maintain than a 20 gallon one, it is by no means very difficult. If you have selected a 20 gallon tank, you Will have the choice of a 20 gallon high or a 20 gallon long. The difference is obvious at first glance. The dimensions of a standard 20 gallon are 24" long by 16" high by 12" Wide. The dimensions of a 20 gallon long are 30" long by 12" high by 12" wide.

Tetra 20 Gallon Aquarium Kit

20 gallon fish tank
  • The Tetra Aquarium comes loaded with an LED hood, that provides a natural daytime effect and a Filter that is whisper quiet while providing powerful, dependable water flow.
  • Artificial Plants add a unique, natural ocean feel while giving your fish a place to hide which reduces fish stress.
  • The Tetra Kit includes, one 20 Gallon Glass Aquarium, one LED hood, one Tetra Mini UL Heater, one Tetra Whisper 20 Filter, one artificial Boxwood Plant Mat, four artificial plants. Add gravel and fish to complete your aquarium.

Starting an aquarium can seem like a very daunting task. With so many decor styles to choose from, it is easy to get overwhelmed. You will need the proper equipment, heater and filter, then the right food, conditioners and not to mention the proper decorations to match your own unique style. With this sometimes seemingly overwhelming list in mind, the guys and girls at Tetra have created three unique kits that will jump start you into keeping an aquarium.

The Tetra LED kit is modelled on a traditional aquarium. This 20 gallon aquarium kit is perfect for an avid Aquariust and also for someone looking to break into the hobby. The Tetra is a great mix of design and beauty.

With the Tetra system, all you'll need are some fish, gravel and care items!

Tank size 24.2" L x 12.4" W x 16.7" H


Marina LED 20 gallon Aquarium Kit

20 gallon tank
  • 20 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" L x 12.5" W x 16.5" H
  • net and aquarium care guild.
  • This marina aquarium is another good option for the beginner aquarist. With taking out the stress of trying to find the right items for the tank.

    The great thing is it comes with everything needed to start in the wonderful world of aquatic fish keeping.

    The marina is a 20 gallon glass tank and features a natural daylight effect l.e.d lighting system. which is incorporated into the canopy.

    This kit as it comes is for cold water fish as it doesn't come with any heating system. That is something that if you wanted to move on to keeping tropical fish or even marine fish you could purchase separately. It does come with a quick change clip-on filter that makes maintaining the tank a lot easier. Also included in the kit is Aqua plus water conditioner to make sure the water from the tap is safe for fish. cycle biological supplement to built a biologically well balanced healthy environment.


    Aqueon Aquarium 20 gallon Fish Tank Starter Kit with LED Lighting

    20 gallon fish tank kit
  • Vibrant LED lighting helps bring your aquatic environment to life!
  • Includes, 20H glass aquarium, low-profile LED full hood, Quiet-Flow LED Pro Power Filter with medium cartridge, 100W preset heater, premium fish food, water conditioner, fish net, thermometer
  • Quiet Flow 10 LED Pro Filter has a red LED light that flashes to indicate when its time to change the cartridge
  • Preset heater will keep your Aquarium temperature at a constant 78 degrees, appropriate for most tropical fish
  • Setup guide included
  • This Aqueon Aquarium 20 gallon Fish Tank Starter Kit Boats an energy saving natural white LED's.

    This kit features a quiet flow pro filtration system to make sure the water is properly kept clean for any fish that lives in the tank.

    A heater is included to keep the water at the right temperature with a thermometer to keep an eye on things.The filtration system features a clever system that has a LED light that lets you know when it needs changing.

    It has a 5 stage filtration system with an ammonia speciality pad will keep the aquarium water clean and healthy for the residents.

    You just need to add gravel decor and of course some fish. Which is why it makes it in our 20 gallon aquarium tanks review.

    LED.Tank size 24-1/4" x 12-1/2" x 16-3/4"


    SeaClear 20 Gallon Acrylic Aquarium Combo Set

    20 gallon reef tank
  • 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
  • Another top contender in our best 20 gallon aquarium guide is this SeaClear 20 gallon tank it's an acrylic tank which again is ideal for homes that have pets or small children as it's not prone from accidental damage like a glass tank. So is worth considering for that reason.

    Being a kit it does come with a few extra items, It comes with a reflector and a 15" lighting fixture. however, it doesn't come with a heater or filtration system.

    Tank dimensions 24" x 13" x 16" inches


    Marineland Aquarium 20 gallon Kit with LED Light

    20 gallon aquarium tank
  • Bio-Wheel Aquarium Kit Features A New Updated Hood And Led Lighting
  • Features 3 Position Switch On, Blue And Off
  • Includes 20 gallon glass aquarium, fluorescent lighting, filter and cartridge
  • Also Includes 200 Watt Submersible Heater, Fish Net, Thermometer, Food And Water Care Samples And Set Up Guide
  • The Led Aquarium Light Integrates Securely Into Place Even When The Hood Is Open
  • This Marineland 20 gallon aquarium kit features a Bio-wheel, which means a biological cycle to take care of toxic ammonia and nitrite.

    The daylight LED creates a natural look to the aquarium that makes it as close to daytime sunlight as possible. With a nigh light LED that features a blue light setting to give the tank that lovely night time glow.

    The LED setup integrates nice and securely into the hood even when the hood is opened. and also being LED they use very little power compared to standard bulbs and last a lot longer.

    The hood as a nice access for feeding and also access to the filter cartridge system. 

    penguin bio filters rite size filter cartridges are included in this kit the system offers a biological filtration that eliminates unwanted toxic ammonia and nitrite.

    Also included is a 200-watt heater to keep the tank at just the right temperature, a thermometer to keep an eye on the temperature of the tank at all times. This aquarium also featured in our best better fish tanks review here

    Tank size 26" x 20" x 15" inches


    Elive Aqua duo 20 gallon LED Starter Kit

    20 gallon aquarium starter ki
  • Dual purpose Aquarium Filter
  • Integrated hidden LED Lighting
  • Hydro corn Bio media and media bag included
  • Easy setup guide included
  • This Elive aquarium has a filter system that allows you to decide between a standard cartridge or an aquaponics filtration. The aquaponics allows you to filter the aquarium in a natural way using live plants to do the work of keeping the filtration levels under control.

    If you'd rather not have live plants in the tank they going back to the standard filtration cartridge will take care of the tank filtration.

    Tank size 25.5" x 14.2" x 17.5"