ID this growing in tank

[Chaloupa]

I had it in my display...it is a pain in the butt....I manually removed it as best I could and now have none....this is what mine looked like...hey you're lucky, you only have 1 algae to pick off .... I had a nasty bunch of them! (3 to be exact....! Ugh)

[daddy01]

Thanks for info..I ended up buying cured live rock and giving my 'infested' rock to my son.
Jim

[Chowder]

Not sure how big your tank is but you could try a Tang or someother fish. I had a Naso tang and purple tang that both ate caulerpa. But Tangs need a lot of space to swim and get big. So would not suggest it if your tank is less then 4 feet.

[daddy01]

Yeh I have small tank 30G. I had a tang and had to give it away, brought ich to and had to clean that up.
Jim

[adidas]

use the Tang method :P