Featherdusters annoying Zoas?

[reefwars]

absolutely in fact anything will bother zoas they are very finiky for staying open be it sand, food,critters or anything else that rubs up against it, its its way of defense, even if it poses no problem or threat the zoas cant just tell whats a problem and whats not and so to play it safe it will close untill it feels the threat is gone if it never goes then it will open and close untill it starves from not feeding