I may be overstocked, but I have an auto-drip doing 40g a day and also a boatload of pothos and other plants. I have little to no aggression.
120g (60"x18"x26") 55g sump.
Stock is.
6 Angels
3 German Blue Rams
3 Bolivian Rams
3 Checkerboard Cichlids
4 Apistograma Cacatouides. 1m:3f
2 Keyhole Cichlids
12 Cardinal Tetras
8 Rummy Nose Tetras
8 Corydora aeneus
1 Clown Pleco (that I never see)
It's definitely not a biotope, but I wanted to stick with SA/CA species.
Maybe but I don't know that seems like a reasonable stock list to me, I like it.