How Big Should A Tank Be To Be Self-Sustaining?

Very interesting journal, and very much in line with what I was thinking.

Yes, for larger fish you need a massive tank, further up I mentioned something like 400+ gallons.

It's not a project, it's just an interesting conversation, I have nowhere to but half that tank yet :D

I might experiment with a smaller tank like you're doing if I manage to free one in the future.
 

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