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[moldrik]

Hey guys,

I have some feather dusters in my tank, and as of late one of them split into two. I was quite happy since they are pretty much some of the first visible hitchhikers other than the brittle stars and some other guys.

However, i looked into the tank today and noticed that one of them ( the biggest one ) seems to have closed it's main hole ( the section of the tube that it comes out of ).

Is this normal? What's happening?
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Honda RC145