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Hey guys
Found this growing out of liverock
bacd4c046816b7a45aa5f5458e0f764a.jpg
 
Looks like some macro algae. Not bad. But can quickly spread, so get rid of it as soon as possible if you don't want it in your tank.
 
The picture is not very clear but have a look at Caulerpa nummularia, see if that resembles it.
 
Yes, but you need to try and get every little fragment of it out, roots and everything, otherwise it will just keep on growing from the smallest piece left behind.
 
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