What are these?

[Oropher]

What are thosr "hands"?
Are they harmless?
How to contain them?

 

[Brad Waddell Wrath's Reef]

What are thosr "hands"?
Are they harmless?
How to contain them?

barnacles! Really cool!

 

[Oropher]

They are like skeleton hands.
Are they going to multiply fast? How to contain the spreadout?

 

[Brad Waddell Wrath's Reef]

They are like skeleton hands.
Are they going to multiply fast? How to contain the spreadout?

I have one on my Leptasera and it has not multiplied. Been there for 5 months

 

[Oropher]

Cool.
Because i dose rotifers and phytoplankton. Those "barnacles" seem to like and grab them.