3 Gallon Desktop Aquarium Kit

Product No. 29002
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The Tetra Crescent 3 is perfect aquariums for a kitchen, bedroom, living room or dorm room. Each kit includes a seamless, curved front aquarium, clear cover, black base frame, energy-efficient, bright white LED lighting with a low voltage power adapter, and Tetra Whisper® internal filter with a medium Bio-Bag®. All you add is water, décor and fish! Remember to use a heater for tropical fish.

Responsible Fishkeeping

Aquariums are fun, relaxing, rewarding, therapeutic and educational. As manufacturers and fishkeepers ourselves, we take great pride in making top quality products while helping educate our fellow fishkeepers to ensure they are successful, and their fish are healthy and happy. The general rule for tank size is one inch of fish per gallon. However other factors should be considered, such as: 
  • How large will the fish be as an adult?
  • Is it species that is active and needs larger space? Or is it a solitary fish?
  • Is it a schooling fish that needs to be in groups of five or more?
  • Is it a fish that produces a lot of waste?
  • Is it a species that is aggressive, does best with others of the same species type, or is it a more peaceful type that would be a good fit in a community tank?
Small aquariums are a great way to get started in the freshwater hobby, and with any new hobby involving   living creatures, it is always best to learn as much as you can. And when buying fish, ask your retailer for guidance in choosing the right fish for your size aquarium. 

This aquarium is appropriate for keeping one goldfish or up to three community tropical fish.

While Tetra® brand takes pride in producing quality products, it is important to understand these freshwater starter aquariums offered by Tetra are not suitable for keeping saltwater fish. Saltwater aquariums require more advanced types of filtration, larger sized aquariums for most marine species, an understanding of saltwater chemistry, and special feeding and care regimens. We encourage our customers to learn more about all aspects of fishkeeping by visiting the links below, joining our Facebook pages, signing up for TetraCare.com, or calling our customer service at 800-526-0650.

3 Gallon Desktop Aquarium Kit is rated 3.6 out of 5 by 7.
Rated 1 out of 5 by from Not Tetra Quality Purchaced 1 month ago. Had to return the first one plastic was split. Second one lid is cracked, and the filtration system is junk. It worked for 2 days and has not worked since. I was told to take it apart and clean it, however it will not come apart. This thing is not worth 2 cents.
Date published: 2017-05-22
Rated 1 out of 5 by from LOVE THIS LID BUT TETRA DOES NOT MAKE THIS ANYMORE BEWARE you see this and think great, but no you will receive a tank with a black lid and the lights are inside the tank now and if you decide not to put the lights in then there are sharp plastic pieces that hang down that could harm your fish if they would jump and hit the lid. I love the clear acrylic lid, it is a much better look and also lets you keep a "clear' eye as to what is going on in the tank.
Date published: 2016-06-30
Rated 5 out of 5 by from The crescent 3 or 5 gallon tanks are excellent and the whisper internal filter quiet. Something the owner can do to dampen any vibration from the motor bumping against the back of the tank. Attach the bottom suction cup as instructed. Nextplace another suction cup on the bottom suction cup in reverse so that the two flat surfaces stick together. This should provide enough of a buffer to prevent the motor housing from rubbing against the aquarium wall. It may take some experimenting to find a suction cup that will do the job. I have owned two of the3 gallon size crescents and 2 of the 5 gallon crescents for about 3 years and this modification has worked for all tanks and made them really quiet. I especially like the Internal filters that came with these tanks because the water flow can be controlled down to practically a trickle. Great for Betta fish. The whisper medium size filters also allow for using many different kinds of media and they are available in 12 pack boxes as well. Tetra is a great company with great customer service. Just be sure to save your receipt in case you have any problems. Thanks Tetra for all the things you do to make the aquarium hobby available and affordable for people.
Date published: 2016-04-17
Rated 5 out of 5 by from Awesome setup! So I inherited this 3 gallon crescent setup from friends who were relocating and set it up on the shelf in my bar at home. threw four crayfish and voila!!! I have 2 other aquariums at home (20 and 100) so this was a happy clean quiet easy to maintain attractive addition!! Really happy with it.
Date published: 2015-04-10
Rated 5 out of 5 by from Perfect for beginners, excellent for a betta fish! I haven't had a fish tank in decades but I lost my mind this winter and decided I wanted a small tank with just a few fish...a simple, Zen hobby.I looked at all types of tanks and kits but decided the Tetra Crescent 5 gallon gave the best bang for the buck: a clean contemporary design which includes a basic lid, energy saving LED light and a quiet internal filter. All I had to add was a heater. And decorations. And a fish!Though it's rated as a 5 gallon, with gravel, decorations and a inch and a half "gap" between rim and water you're looking at about 4 gallons...a bit too small for multiples of fish but perfect for a easy to care for betta fish.Cons: Well, it's an acrylic tank...yup, I scratched it within the first 2 weeks.I recommend this tank to anyone who wants a good looking tank and cares about the quality of their fish pet's life. This is proper aquarium set up made easy.
Date published: 2013-02-16
Rated 5 out of 5 by from Perfect for my betta! I have this 3 gallon kit, and my betta loves it! The filter does not make any noise at all, and keeps the tank clean. The filter is a little big, but fits in the corner nicely. Really nice design. I will be purchasing another one for a second betta.
Date published: 2012-08-12
Rated 3 out of 5 by from Nice Size, Noisy Filter I purchased the tetra crescent 3-gal tank from petsmart for my betta fish. Upon getting it home I was surprised at how large the filter is! This 3 gallon tank has the MEDIUM micro whisper filter in the kit, and it is HUGE in the tank! It took up almost an entire corner of the tank. Also, the light clamp screws into the acrylic so the light pitched forward a bit since the acrylic of the tank flexes a bit with the weight. The filter also barely fits under the acrylic lid provided and the notor buzzes against the plastic and makes the lid rattle. It might be a spectacular tank with a smaller filter, but for the price, it doesn't seem worth it. Not good for a bedroom with the noise.
Date published: 2011-11-30
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how many gallons do I need to put in the fish tank?

Asked by: fish lover12345
Well, I'm not sure why you are asking this question. The one size takes 3 gallons, the other one takes 5 gallons. Both need to have enough water to cover the bottom half of the filter system. BREX
Answered by: BREX
Date published: 2017-02-06

need setup instructions for 5 gallon tank

Asked by: rn09476
No problem, I will email them to you. BREX
Answered by: BREX
Date published: 2016-10-24

Is the flow of the filter adjustable? I have a small injured betta and he struggles against any type of current so I'd like to be able to lower it as much as possible. 

Asked by: emdunn99
Good morning, If you look on the back of the filter housing, you will see where the motor connects to the filter housing there is a slider that will allow you to control the water flow rate of the filter. Thank you, MINI
Answered by: Mini
Date published: 2016-07-11

I need the set up instructions for the crescent 3 filter.

Asked by: Laney0503
Okay, I will email them to you. BREX
Answered by: BREX
Date published: 2016-05-31

The LED light on our Crescent tank has stopped working. Is there a replacement light available?

Asked by: Dcnats
Yes, this one would be considered the replacement light: http://www.tetra-fish.com/Products/led-aquarium-lights-artificial-plants-nets/led-aquarium-light.aspx BREX
Answered by: BREX
Date published: 2016-05-31

Is the lowest setting on this filter suitable for baby shrimp and baby frogs? Thank you 

Asked by: WillowfromVictoria
No. If you are going to raise shrimp or frogs, you need a sponge filter operated by an outside air pump. BREX
Answered by: BREX
Date published: 2016-05-16

What filter replacement should be used for the crescent 3 gallon whisper filtration?

Asked by: Gottleib
That would be the Medium Whisper Bio Bag. BREX
Answered by: BREX
Date published: 2016-10-19

Is there a way to get a replacement lid as mine didn't come with one?

Asked by: JonKK
Unfortunately, no, we do not have that part available separately. We would recommend either returning it and swapping it out at the store or contacting our Consumer Relations Team at 1-800-526-0650 for assistance in replacing the kit. BREX
Answered by: BREX
Date published: 2016-05-02
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