2 questions

[rkhlk]

first question: I'm thinking of adding an arrow crab to my tank but was told that they will eat my feather dusters that came attached to my live rock.......is this true
second question: I have a 55 gal tank and i'm looking at the cleanup crew that they sell here on this site and it seems like alot of critters for my size tank anybody have any input on this?
thanks
rkhlk

 

[rkhlk]

bump

 

[lbzkid16]

I was so excited to see my first feather dusters growing, But when i purchased my arrow crab firts thing he did was go an eat all of them...But o well i would rather that crab he is awsome to watch