At on of the LFS that I frequent, I became rather chummy with one of the owners. She confided in me (since they sell both aquatic plants, fresh water fish and reef fish-corals etc.) that she loves fresh water aquascapes because the endless expression and design possibilities intrigued her. She brought up this very good point: " Salt water reef tanks are basically a symphony in one key, fresh water aquascapes are the entire collection of all music". The colors might be amazing and the fish might be spectacular but it is still a variation of a natural coral reef. How the corals were placed, what fish were used, and if it is convex or concave (or other) would be criteria to consider. The subtleties would be where the judging would take place. If one were to try to duplicate a certain type of reef verses another, that would add interest. But things in the ocean are a lot bigger. One could not have a representation of a Kelp forest. But we can produce a view of a forest in our Fresh water tanks. Certain corals simply could not be used due to their growth size. But a salt coral riparium style could be a start. I hope that there will be coral scapes and salt water expressions of imagination. That is a totally different world that I admire and those who have salt in their blood are a cut above.