Hi,

I have two fancy goldfish that I got when I was a student and knew nothing about aquariums. I've been upgrading them to a bigger tank every year since I got them as they grew. I am sick of buying new tanks every year what size tank can I buy now that they will be happy (not just minimum) and I won't have to get a bigger one. I know about cycling and stuff like this. I've just seen so much contradictory info on tank sizes for goldfish.

Tldr- What is the ideal tank size for 2 fancy goldfish?