Jim,
You set out to create a simulation of a reef tank with the SSA, right? What exactly is a reef tank? Well, it's a simulation of reef life in the ocean, pretty obvious right? How ironic it is that you've gone and created a simulation of a simulation.
I know you figured that it would appeal to people that have always wanted to have a reef tank, but didn't have the time, or money to put into keeping one. Well, aside from the enjoyment and stress of keeping a reef tank, there's the satisfaction a person gets from simulating reef life in their home by maintaining that eco system. With the SSA you've pretty much removed ALL of the maintenance involved with keeping a reef tank. In fact, the only thing in the SSA that is borrowed would be the boundaries (walls).
I guess I find it somewhat strange that you didn't instead set out to create what most people try to simulate with reef tanks in the first place, a more realistic representation of a reef eco system, much like SimAquarium is trying to do.
Don't get me wrong, no complaints what so ever, I guess I just find it ironic and sort of puzzling that you went this route. Your thoughts? Did you ever consider going the same route as SimAquarium or did you have other ideas?