What Size Tank Do You Need for an Axolotl?

This guide will help you determine the minimum size tank you need for an axolotl, based on the adult size of the axolotl and your desired stocking density.

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Axolotls are a popular pet, but they can be difficult to care for. One of the most important things to consider when caring for an axolotl is the size of the tank. Axolotls can grow up to a foot long, so they need a lot of space. The minimum tank size for an axolotl is 10 gallons, but 20 gallons is preferable. If you plan on keeping more than one axolotl, you will need a larger tank.

Aquarium Size

The size of your aquarium will largely depend on how many axolotls you want to keep. A single axolotl needs at least a 10 gallon tank, but 20 gallons is better. If you plan on keeping more than one axolotl, you will need an additional 10 gallons for each additional axolotl. So, if you wanted to keep three axolotls, you would need a 30 gallon tank.

As a general rule of thumb, it is better to go with a larger tank rather than a smaller one. This gives your axolotls more room to move around and also provides them with more hiding places.

Tank Mates

While an axolotl will not necessarily need any tank mates, there are a few species that can live peacefully with them. These include:

-Corydoras Catfish

It is important to note that axolotls are carnivores, so any tank mates should be of a size that they can easily consume.

Water Quality

Water quality is extremely important for axolotls. They are very sensitive to changes in water quality and even small fluctuations can cause stress. Ammonia and nitrites must be kept at zero, and nitrates should be less than 20 ppm. The pH should be between 6.5 and 7.5, and the temperature should be between 60 and 68 degrees Fahrenheit.

Axolotls also require a high level of dissolved oxygen in their water. A good rule of thumb is 1-2 ppm for every inch of fish. So, for an axolotl that is 4 inches long, you would need 4-8 ppm of dissolved oxygen. The best way to achieve this level of dissolved oxygen is to use an air pump with an air stone.

Food and Diet

Axolotls are accomplished escape artists, so the tank must have a tight-fitting lid. They are also messy eaters, so a filter is essential. Aquatic installations can be expensive, so many experts recommend starting with a 10-gallon tank. As the axolotl grows, you can gradually move it to a larger enclosure.

Food and diet are important considerations when setting up an axolotl tank. In the wild, these animals primarily eat small invertebrates, but in captivity they will accept a wide variety of live and frozen foods. It’s important to offer a varied diet to ensure that your axolotl gets the nutrients it needs to stay healthy.


After reviewing the information above, you should have a good idea of how large of a tank you will need for your axolotl. If you are still unsure, please consult with a local reptile or amphibian specialist. They will be able to help you determine the perfect size tank for your pet axolotl.