Clownfish eating my feather duster

[Burray]

I've had my tank up since June last year and now the clownfish started eating my feather duster. It was our yesterday and I saw one if them take a bite in sunk in and hasn't been out but there are more nips taken from the feather duster tube. What can I do?

 

[KrisReef]

Get rid of the clownfish or say goodbuy to the duster. It might already be too late?