I have rescaped my 55 about 10 times in th 2 1/2 years I've had it. Mostly because of the battle with hair algae that I can't seem to win. I'll pull all the rock scrub it, rinse, the scape for 2-3 days till I'm as happy as I can be for the time being. I always seem to end up with a long wall/ island formation. The first layout I had was Similar to nemo4life's but that's where my hair algae battle started. At the time I didn't know any better and let detritus build up between the rock and glass and with no way to clean it I had a massive algae break out. So I then had my rock as a wall leaning on the back glass, but wasn't happy with it. Fish and corals were but things would get trapped behind rocks. Now I have a similar wall. But with many openings througout and it's free standing so no rock to glass. I just wish it was drilled. Powereheads take up so much room in such a small tank as a reef