Good or bad?

[Friction]

Can anyone tell me what the green thing is on LR (bottom of pic) is it good or do I get rid of it? Thanks

Sean

 

[fort384]

Can't tell for sure, but it looks to be a type of sponge to me. If that is what it is, it is fine to leave it be.

 

[joshuajimenez]

It's an aptasia u must remove it will stig the crap out of your corals If u don't take it out

 

[mr_X]

That looks like Codium Edule, a macro algae---
View Codium edule