How to add hiding places for tangs?

[Miami Reef]

Hiding places reduce stress and tang aggression. My tank is pretty minimal. I was thinking of adding pvc to the back? Or maybe that would look ugly.

How does one make effective hiding places?

 

[Smirkish]

Mine really like caves. I incorporated several into the base structure for my arches- it doesn’t take away from the scape at all, you just end up with more support really. They will dig sometimes, to get the cave to their liking. They don’t seem to mind it being fairly open as long as their body is inside. My blue tang immediately claimed the largest one. It’s too big to turn around inside of the cave, still, so the tang just flips it in reverse and backs up inside it every evening. Doesn’t seem to mind whatsoever.

Curious to hear from tang owners who have larger coral. I would assume they would use the coral as shelter as well, in an established reef.