I just thought it was pretty cool to see such a variety of different butterfly fish, you don't see that very often. It's a Korean website so I think they do stuff a bit differently there, and while the tank does look newish, it's hard to say for sure how long it has been running for or how long they guy has had the fish for. Also the fish all look very fat and healthy so I would guess they are eating well, but
Here's a link on the same blog to a cool sps reef tank, fyi you have to scroll down a bit for the better pic.'s
http://spsholic.com/entry/Korean-SPS-Tank_SoolSool