Feather duster mounting

[seahorses4eva]

Bought a few Hawaiian feather dusters from my LFS and wondering the best way to mount/place them. I know they can just leave their tube and move to a new spot if they want so should I even bother? Can I epoxy the tube to a rock?

 

[Therapy1]

I personally always just half buried the bottom of the tube in the sand. If they want to move they can. (but IME never have) I am Against epoxy to a rock.