I think a few steps could really improve the looks. A background is a great suggestion.
I would put the sponge filter on the end of the filter input hide it with the plants. I think the terra cotta pot is a good idea for the kribs. You could hide it behind some other rocks if you don't like the looks.
I would put the sponge filter on the end of the filter input hide it with the plants. I think the terra cotta pot is a good idea for the kribs. You could hide it behind some other rocks if you don't like the looks.