I'm lost with the point of this thread, no offence and sorry for that:
1. Revising commonly accepted volume limits for a nano? To create one more version of what is a nano, that in turn will be questioned by somebody, somewhere.
2. Restrict others members participation in Nano Forum? As medium sized tanks and Nano-Cubes, because other members of Nano Forum don't like that.
On forums it is usually up to the forum staff, not members.
I, personally, don't like (don't pay attention to my whining, this is solely for illustration purposes) when Nano Forum became limited mostly to "My new tank assembly" topic, and most of such threads end with diatoms in the tank, not passing 4 months mark. But again, it's up to them, not to me, all I could do - stop coming here and find more informative place (duck and dive!), like Corals forums.
What I would like to see - the topics and solutions, common for nanos or picos, but these threads are rare and buried in "My new tank built-up" kind of thread. But who cares? Every member is entitled to have own opinion.
And reading at Nano Forum, from people, who have them, that nano tanks are less stable is particularly painful (but I bow my head before RC staff).
The challenges are far greater than with larger systems. Water parameters change much quicker in a small environment and disease and parasites can ravish a system before most hobbyist take notice. I've noticed over the years that most attempts fail because of the dedication and knowledge needed fall short to impatience.
(From the first post of the thread).
I have both: large and small tanks, and my humble experience is different. The reasons of failure or abandonment are also quite different from my point of view, but this is a topic for another, separate thread, that, BTW, should include problems AND solutions.
See you! :wavehand: