(PIC Removed) I really like the way this was scaped... Just found it online. I want to do something similar with mine, but the white sand area would be quite a bit smaller. I just think it looks so cool to have that "river" of white sand in there.
Oh if only they stayed that way for long! I see these guys do their contests where they go into the event, set up their elaborate gorgeous layouts that look like something that should be in a museum, get judged, tear down and go home all in one day!! That tank you posted looks like one of them. Keeping the white sand separate from the black would be a challenge, especially with animals in the tank. Beautiful though!