John, not to try to take over the thread, but the size you're talking about is the standard 210G, right? What exactly do you mean by custom? Did you want to place overflows somewhere differeant than standard location or did you want to put the tank in an odd location of the house?
NY, that tank is awesome...you don't see too many tanks with rays in them...what are you plans for the future with that guy? How fast do they grow? Really, just spectacular...