What are these on live rock?

[canisterreef]

These have appeared on my live rock. Pictures as good as I can get. They do not look like aptasia to me. I did have a couple which matched and used aptasia F which killed them. These are green under blue light but brown under white light. The tentacles are very small unlike aptasia and they are clustered in a small group. Good or bad? Thanks

 

[shakacuz]

colonial hydroids?

 

[canisterreef]

colonial hydroids?

Thanks. Should I get rid?

 

[shakacuz]

Thanks. Should I get rid?

i'm not too confident in my guess. but it does seem like colonial hydroids. they can become invasive and overly irritate corals.

i'd get rid of them to be on the safe side, but also allow for others to chime in with their assumptions as well.

 

[yanetterer]

Yes, get rid of them. They’ll spread with enough nutrients. My preferred method is to pull the rock, scrape, rinse, and cover the spot with glue or epoxy. If I can’t get the rock out then I’ll just cover with epoxy.

 

[canisterreef]

i'm not too confident in my guess. but it does seem like colonial hydroids. they can become invasive and overly irritate corals.

i'd get rid of them to be on the safe side, but also allow for others to chime in with their assumptions as well.

Thank you

 

[canisterreef]

Yes, get rid of them. They’ll spread with enough nutrients. My preferred method is to pull the rock, scrape, rinse, and cover the spot with glue or epoxy. If I can’t get the rock out then I’ll just cover with epoxy.

Thanks I will do that