Can anyone identify what this is

[subbyjay]

Just noticed this growing from my live rock, is this anything bad? Btw the white substance on the right of it is just glue.

 

[Tomtopping]

Aptasia

 

[rovster]

Yup!

 

[subbyjay]

Has anyone ever had these before? An whats the best/safetest way to get rid of them?

 

[Sushi man]

Kalk paste

 

[DRThompson]

Options:
Leave it alone, it will multiply quickly
Kalk paste, must get it to eat the paste
AptasiaX, must get it to eat it
Peppermint shrimp might eat it if hungry enough
Berghia nudibranch will eat it then starve and die
Aptasia eating filefish, think it's called a matted filefish might eat it if hungry enough
Copperband butterfly might eat it if starving
Take rock out and burn it off with lighter

I have to say I've tried them all. They have all worked, and they have all failed.:uhoh3:

 

[billsreef]

Best trick with the kalk paste is to turn off the pumps, and force feed it a big old glob of kalk paste to the point of also covering it. Let things set about 20 minutes or so before turning the pumps back on. Gives time for the kalk to do some burning