is 45g still nano?

[Delphinus]

I dunno, I wouldn't have thought it as nano myself but I guess everyone will have their own definition of what constitutes nano.

One of my tanks is a 40g semi cube, 24x24x12 ... it's more of a frag tank shape than anything because of it's over the top shallowness. It houses two carpet anemones, which, well, most people won't agree that a carpet belongs in a "nano" let alone two so to ease my shame I don't call it a nano as long as they're in there.

But if I had made it into a mini reef with multiple colonies of whatever, then I might have called it a nano.

I always thought the cutoff was more around 30g but I guess I see Todd's point in that cube tanks tend to be smaller in stature so the cutoff is higher for those. I'll disagree on his cutoff point at 100g because that would make my 110g cube nearly a nano and at 30x30x30 it's quite a behemoth of a tank and it happens to be the largest tank I have with water in it. I'm thinking maybe a 24" cube is more the max of what I'd call "still a nano" and that's more in the neighbourhood of 60g, so I'll call that "my" cutoff.