I have the exact same xenia you do. I love it but is is also taking over my tank. It drives me crazy. I have been trying to sell it off to LFS's (1) but they don't want to take too much of it and (2) I have to mount it to a small rock first. This makes it easier to sell so they won't take it...
Never had a purple tang but a good friend keeps a purple and a yellow. They are probably about the size you are talking about, maybe the yellow is a little smaller. They do just fine. He had 2 purples and sold one back to a store because it was too aggressive.
Thank you all for the responses.
More details: The area is all open. I have basically one big room that is a family room, kitchen and living room (does anyone REALLY know the difference?!) and dining room. High ceilings. Most of that has and will get tile. The specific floor that the tank...
Ihave a 180G AG reef with a custom stand/hood. Its a pretty mature tank. The stand/hood is almost completely encloses the tank. The only opening for air to get in is 2 Icecaps in the top (or, if I leave a door open). I plan to do some house renovations soon. My question revolves around...