Im thinking it would be best to go for a south american biotope. Val, swords and a shoal of cardinal tetras.
As far as using swords and val, id prefer to have to have 2 maybe 3 kinds of plants in there, a tall one that can grow up the back and over the powerhead, and a shorter more grassy or bushy plant for the front. Can someone please give me the common names for some of the varieties we have here that I can use for this effect.
I dont think Ill have any other fish then the tetras in there, even though these tanks can cope with a huge load, maybe a small school of corydora if I can get away with it, whats the smallest kind we can get here?
Oh and P44 you mentioned layered substrate before, do you mean using something like daltons aquatic mix?