ID this?

[Squidz]

Is it just a duster?

 

[ying yang]

Barnacle I would say.google barnacles and compare.

 

[thatmanMIKEson]

It is absolutely a barnacle, i hate when that happens when the coral gets established, I'd dig it out, it damages the coral structure but not a big deal but it can slow growth over time. I dig them out eventually when coral is strong...

 

[Squidz]

I would say it is.

 

[thatmanMIKEson]

Thats a healthy barnacle too! Big!

 

[Squidz]

Haha thank you!

 

[ying yang]

Good luck and have fun ^_^