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Tetra

Tetra 20 Gallon Complete Tropical Fish Tank Kit

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Availability: In Stock.
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Arrives Sunday, Aug 9
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Color: Tetra


Size: 20 gallon


Features

  • GLASS AQUARIUM KIT: The kit includes one glass aquarium with a low-profile, hinged hood, an LED lighting system, an internal filter and filter cartridge, an aquarium heater and thermometer, a water conditioner sample, a food sample and a setup and maintenance guide, plus attractive decor.
  • LED LIGHTING: Energy-efficient LEDs give you a beautiful natural daylight effect.
  • FILTRATION SYSTEM: The included Tetra Internal Filtration System features mechanical filtration to catch debris and chemical filtration with Ultra-Activated Carbon for removal of odors, discoloration and toxins.
  • EASY SETUP: Aquarium kit includes items you need to create a healthy home for your fish.
  • SIZE: This 20-gallon glass aquarium measures 24 inches wide by 12 inches deep by 16 inches high

Description

The Tetra Complete LED Aquarium Kit comes with items you need to create a healthy home for your fish. This complete kit includes a 20-gallon glass aquarium, a low-profile, hinged hood with LED lighting system, the Tetra Whisper PF20 Power Filter with a Tetra Whisper Bio-Bag Filter Cartridge, a Tetra Aquarium heater and thermometer, AquaSafe water conditioner sample, TetraMin food sample and a setup and maintenance guide. The included Tetra Internal Filtration System features mechanical filtration to catch debris and chemical filtration with Ultra-Activated® Carbon for removal of odors, discoloration and toxins. The energy-efficient LED Lighting system gives you a beautiful natural daylight effect. Approximate dimensions 24 inches x 12 inches x 16 inches. Attractive artificial plants add a natural ocean feel. Add gravel and fish to complete your aquarium. Small aquariums are a great way to get started in the freshwater fishkeeping hobby, and with any new hobby involving living creatures, it is always best to learn as much as you can. When buying fish, ask your retailer for guidance in choosing the right fish for your size aquarium. Caution: Children under age 13 should have adult supervision with setup, maintenance and fish care.

Brand: Tetra


Material: Glass


Tank Volume: 20 gallons


Special Feature: Transparent


Product Dimensions: 24.2"L x 12.4"W x 16.7"H


Shape: Rectangular


Specific Uses For Product: Indoor


Style: Classic


Color: Tetra


Included Components: See label


Product Dimensions ‏ : ‎ 27.88 x 16.13 x 20.38 inches; 33.4 pounds


Item model number ‏ : ‎ NV33821


Date First Available ‏ : ‎ August 17, 2015


Manufacturer ‏ : ‎ United Pet Group


Best Sellers Rank: #13,336 in Pet Supplies (See Top 100 in Pet Supplies) #7 in Aquarium Starter Kits


#7 in Aquarium Starter Kits:


Customer Reviews: 4.3 4.3 out of 5 stars (3,802)


Brand Name: Tetra


Included Components: See label


Model Number: NV33821


UPC: 782560425553 047497338216


Global Trade Identification Number: 16


Manufacturer: United Pet Group


Set Name: Complete Tropical Fish Tank Kit


Unit Count: 1 Count


Item Type Name: 20 Gallon Aquarium Kit


Manufacturer Part Number: NV33821


Warranty Description: See label


Additional Features: Transparent


Specific Uses For Product: Indoor


Vivarium Type: Aquarium


Pet Type: Fish


Target Species: Fish


Tank Volume: 20 gallons


Item Dimensions L x W x H: 24.2"L x 12.4"W x 16.7"H


Item Shape: Rectangular


Product Style: Classic


Color: Tetra


Material Type: Glass


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Good buy
Review Image by Kaysy Smith
I wish it was bit longer instead of taller. Most of your gallons are in height but the tank itself is beautiful and my sharks love it. Easy to clean and the heater that comes with it works great to keep the water warm. I have no leaks or cracks and the filter that comes with it works good. It is a bit louder than other ones but it puts in work. And had a great waterfall sound. It is decently heavy so be prepared to lift with your knees. All in all it’s a great tank and great size for little tetras and angelfish. ... show more
Reviewed in the United States on February 25, 2026 by Kaysy Smith
    • Great product!
Excellent deal considering what it comes with, I couldn't find any other kit that came with as much stuff! I did buy 1 more plant and a hiding place for my ghost shrimp. Some one said the plants look fake, but they are supposed to as they are part of the "Wonderland " series. That being said I'll admit they look good under they changing light colors. The filter is great and it provides plenty of water movement and it's pretty quiet(it was noisy for the first 30 seconds until it worked all the air out of the turbine), the only noise to come from it now is the water cascading off of it. The heater seems to work good, although I purchased this tank as an upgrade for my 2 goldfish so I don't use the heater in this tank. I use it in their old 3 gallon fish tank with a betta. It keeps the water at an even 77 degrees F. I would recommend as some add ons; gravel, some kind of starter bacteria to cycle the tank faster, some more plants /decorations, and more water conditioner/food after the samples are used up. The instructions for the hood do say to clip the lights into the hood, but these lights (at least for the color fusion) are a different type that come with their own instructions which is easy to install and one that I prefer so when I open the hood I'm not blinded by the led lights. One other thing I would recommend to get if you don't want to wait to add fish is nitrifying bacteria such as marineland's bio spira that should cycle your tank in <48 hours. ... show more
Reviewed in the United States on February 25, 2017 by Matt
    • I personally love it. I had an aquarium growing up that ...
It's an aquarium. Not huge but big enough, you can put many different fish in it. I personally love it. I had an aquarium growing up that was the same size, but haven't had one in 20 years. This is a great one to get back in the game. Here are my initial impressions, and I will also leave some highly recommended upgrades to get you started. It's came securely packaged. Working for a few years in distribution, I am fine with how it was packaged and don't get the issue that some people complain about. It comes with a lot of nice little extras. Water treatment, thermometer, fishnet, fish food...every little thing you can think of to get started. If you are thinking of getting an aquarium, I would definitely start with this one. Now, bad things. Sorry, but I have to do this. It comes with an nonadjustable thermostat. It heats to about 74 -76 degree range, so this will be the very first part replaced. But it also doesn't come with an underwater filter and air diffuser of any kind. I know that the filter it comes with naturally diffuses air back into the water, but....personal preference. So here are the upgrades that I think you should add to your cart before you purchase this item. Start off by buying an undergravel, filter. This one fits perfectly Lee's 15/20 Original Undergravel Filter, 12-Inch by 24-Inch You will need tubing and an air pump for it. I went with this Air Pump. Rated for 40 gallons...should be great for an upgrade Tetra 77853 Whisper Air Pump, 40-Gallon You can never have too much tubing, so I added this also PENN PLAX Standard Airline Tubing Air Pump Accessories, 25-Feet and gravel Glofish Aquarium Gravel, Black with Fluorescent Highlights, 5-Pound Bag 2 bag minimum...I messed up and just bought 1 bag. It didn't even cover the bottom with a thin layer. 2 would work, I think, but I went ahead and just placed an order for an extra 2 that will give me a total of 3. An Air Manifold Hang on 4 Way Air Pump Manifold Valve Taps REMOVABLE for 4/6mm tubing line tube and some sort of background decor other than that, all you really need is a better heater. Temperature control is probably one of the most important things you can do for your fish beside feeding them. I just ordered this EHEIM Jager Aquarium Thermostat Heater 300W then just add fish, and you will be really happy. ... show more
Reviewed in the United States on January 9, 2016 by JamesC
    • Great Tank, Like Hinged Hood. Make Sure Pump Tube is Pressed Down Tight.
Review Image by Here, There, & Everywhere
Review Image by Here, There, & Everywhere
Review Image by Here, There, & Everywhere
Review Image by Here, There, & Everywhere
Review Image by Here, There, & Everywhere
There are several components to this aquarium to review. Firstly, the tank itself. It seems made well, simple enough. Now the hood. It has perforated cutouts for a filter and such. It also has a rectangular feeding hole near the front. There are extra spaces in the back for the light cable and air tubing if so desired. The lights actually have to be placed into their respective slots on the underside of the hood and there is a channel for the cord. The light cord can come out the left or right side, depending on preference. There are also 2 hinges that need to be installed. We found installing them onto the hood first worked easier than putting them on the tank's rim first. Just make sure that the front lip of the hinge clip (shorter side) goes under the tank's inner rim or the hood will not go down flat/sit flush. I like the hood overall, but I am concerned about the light strips constant contact with water. They're not submerged in the water, but they stay wet nonetheless. The heater is not being used, so I can not comment on that. I did stick the exterior temperature strip on the outside of the tank. Now onto the other accessories. The fishnet is basic, simple. Tjere is also some aquarium starter to make tap water safe and a small sample of fish flakes. I highly recommend having your own fish food and aquarium solutions. The decor is sparse. They actually gave me the wrong decor for my tank. I did get the boxwood gravel mat, but the rest of the plants that were in my kit were the "GloFish" plants. They're really bright and cheap looking and are better suited for the GloFish version kit, which they are actually intended for. If I had wanted the GloFish accessories, I would have chosen the GloFish kit. All the rest of the decor in my picture was from my smaller aquarium or ones that I purchased separately. I'm glad I had my own stuff because the included decor is pretty chinsy. Lastly we're onto the "Whisper" filter system. Whisper is a bit of a stretch, more like humming filter. As you can guess this is not as quiet as they make it sound, but it is tolerable... well at least now it is. I did have an issue w/the filter being super loud for days. I was so annoyed because it sounded like a small aircraft taking off in my dining room and it could be heard throughout the house. I almost dropped the star rating severely because of the amount of noise this thing was making. I decided to tinker w/the filter system again to see if I got a defective one or if it was some other issue. I'm glad I did because it's way more quiet now, not a Whisper, but definitely not obnoxious. The tube that presses down into the pump had somehow gotten slightly loose. This was causing vibration and also the pump gear wasn't catching like it should. The result was the filter was super loud. Once I tinkered around and pulled the tube back up and pressed it back in until it clicked, then the noise dropped drastically. Also, I found that I can not use the bio sphere filter type mediums in the back of the filter either because they cause vibration too. The pump comes w/1 Large size filter. Make sure to buy/order more of those too for monthly changes. ... show more
Reviewed in the United States on May 10, 2021 by Here, There, & Everywhere
    • Great tank, hard to find replacement lights
This is a fantastic tank. I purchased it in September 2022, and set it up in October. I haven't had any issues with it, and the same fish I bought then are still happy and healthy! As of today though (July 30th 2025) the light strip has started to flicker and shut off on its own. I have been looking for replacement lights, but the lights in this hood are very unique and I cannot seem to locate a replacement. After searching Amazon, customer reviews, the Web at large and the company site, I still haven't located this particular light strip. I did call and left a message with customer service as it's after hours over East where their headquarters are. I hope to hear back soon with some options, but am wondering if anyone has had to replace the light and may have other resources? ... show more
Reviewed in the United States on July 30, 2025 by Neon
    • Perfect
Review Image by Emily Burns
Perfect. My guys love it!
Reviewed in the United States on June 5, 2026 by Emily Burns
    • Refused to help me. An so much broken and wrong
Review Image by Richard Madaris
Review Image by Richard Madaris
Review Image by Richard Madaris
Review Image by Richard Madaris
Review Image by Richard Madaris
Review Image by Richard Madaris
I reached out to company by phone and their contact sheet. No response. Clamps broken on light. Light is wrong light for the tank. Doesn’t fit under the lid at all and can’t go on back of tank due to filter and can’t go on side of tank due to its to long for the side. It’s fully not what’s advertised at all on the lights or how to install at all. The material is flimsy for lid and lid and clamps to lid are broken on one side and lid is cracked. Was a birthday gift I got bc my birthday is this week. Can’t send it back bc I don’t have the box. Figured it would all be new and nothing broken. I even went out and bought new items and rocks and new filters and lucky bamboo to add next week. Just tried tonight to finally take it off the counter and look at it and try to see if I could get it ready to cycle. Noticed the crack in the lid first. Thought okay it’s fine. Won’t be a big deal but nope then notice the lights are not even the right lights for the tank at all. Like no comparison to what’s suppose to come with it. So now I have cracked lid and no lights at all. Not to mention two clamps were broken as well. One for lid and one for the light that doesn’t even fit this tank. So I stopped their and didn’t even bother to look at the rest. Just done and out 160 plus dollars for a twenty gallon tank that has no lid and no lights. I could have bought a 20 gallon at pet store for 20$ on sale for what I got for this. If I could give zero stars I would for lack of communication and failure to help ... show more
Reviewed in the United States on January 29, 2025 by Richard Madaris
    • Would be almost perfect if the pump wasn't so very loud and annoying.
Set up was easy. Looks great . Pump is very loud, followed all of the trouble shooting solutions for a noisy pump, problem remains. Will convert to (2) pumps instead of one that we are Currently using on a smaller aquarium
Reviewed in the United States on June 6, 2026 by edbusa

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