I like the contrast of the different foliage types.
And I have found that dwarf sag fills in nice and quick.
You may find that reading up on the golden ratio helps with tank design.
I found it makes a huge difference.
People can take it to obsessive extremes (Iím not quite that bad... yet) but it is fascinating to see what a difference it can make to move a plant or a rock just a few inches.
I just find it easier to go by a few rules, rather than struggle starting from scratch by myself.