Bubble tip splits

[corrosionjerry]

Suprises never cease in my SW tank that I started at the beginning of the year.... I went away for a week and when I came back my bubble tip anome split and now I have two... I purchased it from a member here only a couple of months ago and it was the size of a nickel....

Also all of a sudden on one of my rocks some form of green feather duster has apeared....