This is a test of commonsense. Complete the next sentence:

How to care for an axolotl 
Set up the tank. 
A 10-gallon (38 liter) tank can work for a single axolotl. However, bigger is generally better when it comes to an axolotl.
Opt for the biggest tank you can fit into your home. A 20-gallon (76 liter) tank is a good size for an axolotl.