--but i think the rocks really overpower the tank--they form such a strong and compact shape in the middle--with the plants almost as afterthoughts on the sides. it seems like you need some more integration of rocks and plants--and some more "depth" to the tank. the rocks seem like a great big solid wall. maybe if there were some spaces, or some variation in the compostion. maybe some height differences in the rock formation would help. it just seems a little one dimensional. i think if you break up the "wall" a little, and have some height variation, and some more plants, it would look really nice. it would also be easier to appreciate the individual rocks for their beauty, instead of having them as part of a uniform piece.
just my opinion.