5 Best 20 Gallon Fish Tank Starter Kits

It doesn’t matter whether you’re planning on setting up a new aquarium fish tank in your home or office space, there’s a lot to think about and, of course, you’re going to want to make sure you’re getting everything right.

This is why a lot of tank owners, experienced ones included, will opt for a fish tank kit, rather than going out and purchasing everything you need separately.

Not only does this save time while minimizing the risk of buying the wrong thing which can affect the quality of life for your aquatic plants, but more often than not it will also save you money.

With this in mind, today we’re going to be exploring the best, rather sizable, 20-gallon fish tank kits, designed to help you have everything you need to get started, allowing you to focus more on the enjoyment side of owning a tank, rather than the technical side.

SeaClear Acrylic Aquarium Combo Set

  • Half the weight of a glass aquarium tank
  • Less risk of cracking and chipping than a glass tank
  • Comes with a reflector and 15-inch light fixture
  • Standard rectangle tank shape
  • Doesn’t come with a filter or heater
  • The light fixture is pretty flimsy and low-quality compared with the rest of the tank

To start off our list, we’ve chosen the SeaClear Acrylic Aquarium Combo Set; a renowned company that’s famous of its high-quality products that are built to last. This particular model is your standard rectangle shape, meaning you’ll be able to set it up on any surface or nestle it into any corner.

Included in this combo set, you’ll find the tank itself, a reflector for optimizing the view of your aquarium, and a 15-inch lighting fixture. This, again, makes sure your view of the inside of the tank is amazing any time of day; always resulting in the most amount of enjoyment.

As you can tell from the title, this aquarium is designed and crafted using acrylic materials rather than glass. This is an important feature to note since acrylic is known for being up to 17 times stronger than glass, and much clearer for when you’re looking inside.

It’s also sure to withstand the majority of impacts you’ll come across in day-to-day life.

This also means there’s less risk of the tank chipping or cracking; which is perfect if you have children or pets in the house. What’s more, acrylic is also at least half the weight of a glass tank, so you really can set this tank up anyway!

One downside to this tank is the fact it doesn’t come with a filter or heater, but this is common among aquarium kits, but this can easily be resolved since these items are affordable when purchased online.

All in all, if you’re looking for a basic aquarium tank that’s affordable, easy to use and set up, and has pretty much everything you need to get started, there might not be any need to look further than the SeaClear Combo Set.

Tetra 20-Gallon Complete Aquarium Kit w/ Filter, Heater, LED, and Plants

  • Made from scratch-resistant glass
  • Comes with a filter, heater, and LED hood light
  • Perfecting simulates day and night cycles
  • Easy to set up and get started. Just add fish!
  • None

If you’re willing to spend a little extra on your aquarium set compared with the SeaClear tank, but you really do want the full experience where you won’t have to worry about buying anything extra, bar your fish, Tetra may have the perfect solution you’ve been looking for.

As the title suggests, this aquarium set is complete and comes with the filter, heater, and LED lights you need to get your tank up and running in one single purchase. This particular line even comes with artificial plants to help you get started on decorating your tank! All you need to do is add fish!

The Tetra Tank is produced using scratch-resistant glass and is made right here at home in the USA.
Taking a quick look into each feature, the LED hood light is great for simulating day and night cycles, the Whisper effect filter is quiet and gets the job done at keeping your tank cleaner for longer, and the heater does exactly what it says it’s going to do.

What more could you ask for?

There is nothing bad to say about this tank, and you can tell Tetra has put time and effort into making sure both beginners and expert tank keepers have the best experience. The tank is a nice size, well-designed, durable, and promises to be exactly what you’re looking for.

Aqueon Aquarium Fish Tank Starter Kits with LED Lighting

  • Comes with lights, filter (with cartridge), and heater
  • Comes with a custom fish net and thermometer
  • All setup instructions and clear and easy to understand
  • Great size with 360° viewing area
  • Parts are a bit simple for an experienced fish tank owner looking for more

Aqueon is another fantastic brand of tank manufacturer that’s renowned around the world for their quality aquarium products, and this particular 20-gallon fish tank starter kit is no exception to the rule. As the name states, this tank kit is aimed at beginners, and it’s a great way to introduce fish to a family or children.

This is a glass aquarium which means it can be a bit heavier than other tanks, but that shouldn’t be a problem once you’re set up. Since this is a beginner kit, you’ll find a full hood LED light, a quiet heater for keeping tropical fish, a water conditioner, a thermometer for monitoring the temperature of the water, and even a fish tank.

This kit even comes with fish food to help you get started! You literally just need to add fish and water to the tank, and you’re good to go! In terms of quality, even each included part has been chosen to be effective and actually get the job done.

For example, the filter is a Pro Quiet-Flow 10 which takes cartridges (some of which are included) and is quiet, and helps to keep your fish tank cleaner for longer. The cartridges are easy to replace when the little red light glows and can be easily found online.

All the instructions you need to set up and install everything are included in your purchase, so you literally won’t have to worry about anything. While these parts may be a bit basic for experienced tank owners, for a quick setup, it doesn’t really get much better than this.

Marina LED Aquarium Kit

  • Ideal for beginners and experts alike
  • Designed to last for years
  • Comes with extra filter cartridges to stop you running out
  • Comes with a complete care guide to help
  • Parts may not be as customizable as expert fish tank owners would like

The Marina LED Aquarium Kit is a great choice if you’re looking for an affordable 20-gallon fish tank that’s easy to set up, does everything you’ll want it to, and is produced to a high quality. It’s a nice balance of everything you’d be looking for.

Made in the USA, the Marina tank comes with a selection of goodies to get you started, including a clip-on Slim S20 filter with four extra cartridges to tie you over in the future. There’s even a net for moving your fish around, and a complete fish and aquarium care guide to help beginners settle into it easily.

All in all, this is easily one of the most popular fish tank kits available right, and rightly so. You’ll be amazed at the value for money and the fact that it’s designed for years to come. You’re almost guaranteed to fall in love with this fish tank set!

SeaClear Acrylic Aquarium Combo Set

  • Ideal for beginners and experts alike
  • Designed to last for years
  • Comes with extra filter cartridges to stop you from running out
  • Comes with a complete care guide to help
  • Parts may not be as customizable as expert fish tank owners would like

For the final 20-gallon tank fish kit for the day, we’ve gone back over to SeaClear, which is pretty much the exact same tank, this time in a unique hexagon shape. This is a unique design touch you rarely see, so if you’re looking for something a little bit different, a little bit stylish, this could be it.

Just like the previous SeaClear tank, this one is 17 times stronger than glass since it’s made from acrylic materials. This, again, means the tank is very resistant to scratches, chips, and cracks. Also as before, this tank does come with a reflector and a 15-inch light fixture.

While this does mean you’re going to have to pay a bit extra for your own filter and heater etc., this does mean you have control over the type of products you can use; or you can just do without them!

In short, this is another great tank by SeaClear, and the hexagonal shape really does open up the viewing for a unique but utterly enjoyable viewing experience of your aquascape inside. If you’re looking for a touch of style, SeaClear might be what you’re after.


To summarize, it’s easy to see there are plenty of fantastic-looking 20-gallon fish tank kits that not only provide you with a tank but also a lot of the equipment you’ll need. If you’re looking for a first-time set, or you quickly want to set up a tank at home or in your office, any of the five tank kits above will make an ideal choice.

Last update on 2023-08-15 / Affiliate links / Images from Amazon Product Advertising API


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