What do you feed your feather duster bigbobsull?
I did notice the tube of my duster was getting clear, but that was due to my horrible camelback shrimp picking away at it. He is now gone to a new home.
I also had a hitch hiker crab in my tank that I actually seen pulling this duster behind a rock and munching on the tube. Fixed him too.
So now my duster is just fine, the areas that the crab and shrimp dismantled grew back so as long as there is a worm inside and nothing in your tank picking away at the tube you should be okay.
One very interesting thing to do is at night when all lights are out take a flashlight and see what is in your tank at night, you might be amazed....