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Extended holiday returns
FREE refund/replacement until Jan 31, 2027 Learn more
FREE refund/replacement until Jan 31, 2027 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 3 left in stock, order soon!
Arrives
Saturday, Nov 14
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At a glance
- Condition
- New
- Size
- 20 gallon
- Model
- NV33821
- Dimensions
- 24.2"L x 12.4"W x 16.7"H
- Weight
- 15.5 kg
- Color
- Tetra
- Material
- Glass
- In the box
- Aquarium
- Warranty
- See label
Features 5
- 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.
Specs 30
| Brand | Tetra |
|---|---|
| Material | Glass |
| Tank Volume | 20 gallons |
| Special Feature | Transparent |
| Product Dimensions | 24.2"L x 12.4"W x 16.7"H |
| Item Weight | 15.5 kg |
| Shape | Rectangular |
| Specific Uses For Product | Indoor |
| Style | Classic |
| Color | Tetra |
| Item model number | NV33821 |
| Manufacturer | United Pet Group |
| Brand Name | Tetra |
| Model Number | NV33821 |
| UPC | 782560425553 047497338216 |
| Number of Items | 1 |
| Global Trade Identification Number | 16 |
| Set Name | Complete Tropical Fish Tank Kit |
| Item Highlight | Aquarium Kit Includes LED Light, 20 Gallon Glass Tank With Hinged Hood, Filter, Filter Cartridge, Décor, For Freshwater Fish |
| Unit Count | 1 Count |
| Item Type Name | 20 Gallon Aquarium Kit |
| Manufacturer Part Number | NV33821 |
| Additional Features | Transparent |
| Vivarium Type | Aquarium |
| Pet Type | Fish |
| Target Species | Fish |
| Item Dimensions L x W x H | 24.2"L x 12.4"W x 16.7"H |
| Item Shape | Rectangular |
| Product Style | Classic |
| Material Type | Glass |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Nov 14
Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Customer service was great with this Had problem with it and it was f
Size: 20 gallon
Style: Classic
Very good service and it's a great tank
Reviewed in the United States on September 1, 2026 by Russell S.
Broken filter, bad fake plants, 5 stars!!!
Size: 20 gallon
Style: Classic
So let me start with the bad. The thermometer is a plastic stip that doesn't work. The horrible plastic plants will hurt most fish. The filter was broken and sounded like a bunch of rocks were grinding inside it. And the light is a super basic on off. Now why you should buy this over all the other tanks. That's the tank and the price. The tank is a perfectly functional 20 gal fish tank. It has a nice lid. And I was surprised I liked the heater. All this for less than what a 20 gal fish tank without a lid would normally cost. Seriously just replace the stuff you don't like. The tank alone is worth the price. My tank has been set up for a month now. Photo attached.
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Reviewed in the United States on March 10, 2025 by Jon Day
Great tank, hard to find replacement lights
Size: 20 gallon
Style: Classic
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?
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Reviewed in the United States on July 30, 2025 by Neon
Great Tank, Like Hinged Hood. Make Sure Pump Tube is Pressed Down Tight.
Size: 20 gallon
Style: Classic
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.
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Reviewed in the United States on May 10, 2021 by Here, There, & Everywhere
Would definitely buy again!!!
Size: 20 gallon
Style: Classic
The 20 gallon tank came packed with sturdy, hard foam squares at all corners. I was concerned the filter would be loud after reading some reviews......not so..... very quiet. My one complaint… the box the filter was in indicated to replace filter bags with “large” size. Upon receiving them I found they were too large and would not fit. I feel the filter included in the tank package was for a 10 gallon tank. I kept the ‘too large’ filter bags and decided to order a larger filter. I feel a larger one will keep my tank cleaner. I feel the small filter surface could be the reason I am experiencing a longer than usual time cycling my tank. The heater keeps the water temperature in the high 70's, perfect for the tropical fish I intend to place in the tank . I bought the GDLF metal stand from Amazon. The stand is very strong and beautiful. I am very pleased with the tank … other than the issue with the filter and definitely recommend purchasing the beautiful stand.
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Reviewed in the United States on April 27, 2023 by Margo Beach
Easy to set up
Size: 20 gallon
Style: Classic
Everything you need except air pump and gravel
Reviewed in the United States on September 3, 2026 by Daniel Stump
VERY PLEASED
Size: 20 gallon
Style: Classic
20 GAL JUST THE RIGHT SIZE FOR MY SM APT. GREAT STARTER KIT TO GET USED TO HAVING FISH. I DIDN'T LIKE THE PUMP. TOO LOUD FOR ME. I INVESTED IN A FLUVAL CANNISTER. LOVE THE FLUVAL. VERY, VERY QUIET. FILTERS 200 GAL/HR. GREAT BIOLOGICAL SYSTEM. LIGHTING GREAT.FISH DON'T NEED IT SO BRIGHT SO I CAN TAPE OVER OR JUST LET IT BE. THERMOMETER AUTOMATIC, KEEPS TANK A STEADY 76. BOUGHT ANOTHER HEATER FOR OTHER SIDE AS I LIVE IN COLD CLIMATE AND LIKE IT COLD AT NIGHT--THERE IS A HOLE FOR CORD. OF COURSE, INVESTMENT NEEDED FOR HOBBY $$$--AQUARIUM STAND, FISH, FISH FOOD, GRAVEL, PLANTS, BIG ROCK DECORATIONS, GRAVEL VACUUM, WATER CONDITIONER, PURIFIER, PH , ALGAE INHIBIT, ALGAE SCRAPER, ICK TREATMENT, STICKS TO MEASURE WATER, FILTER CARTRIDGES, AIR PUMP???, BACKGROUND PAPER, TIMER FOR LIGHTS, AUTOMATIC FEEDER FOR MY VACATIONS, BUCKET TO DRAIN WATER WHEN VACUUMING GRAVEL.--- EXACT DIMENSIONS: FRAME= 16.75"TALL--12 5/8" WIDE--24.25 LENGTH, HOOD ADDS 1/2" HEIGHT, CLIPS FOR HOOD IN REAR ADD 3/4" FROM FRAME, FILTER ADDS 2" ABOVE FRAME, FILTER ADDS 2 1/4" WIDER IN REAR.
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Reviewed in the United States on December 23, 2019 by joji
Everything as it should be
Size: 20 gallon
Style: Classic
6-5-2023 I'm going to write my first review now as I just got it delivered & set up. Cycling it now. 1st thing the lid is not as sturdy as i thought yet light enough. Everything was there & not broken. The heater could use a better set up as I can't get it to sit straight. The pump is amazing! The lights are bright. Me personally would like them to change color but no big deal. After the tank cycles (trying not to rush) I will add my fish and then finish my review. Well worth the money so far. 6-13-2023 The pump is no longer quiet. It's making a loud humming noise. It did quit working but I took everything apart (meaning the pump) and reassembled it. It started working again. I've tried multiple ways to quiet the pump down but nothing has worked. I'm not a first timer when it comes to fish tanks. 6-14-2023 I took it apart yet again and the pump is now working when it wants to. I will never buy another of this brand.
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Reviewed in the United States on June 5, 2023 by Tonya