shaywood Posted April 3, 2021 Share Posted April 3, 2021 Trying to ID green polys on the left. Came from a small piece of ocean live rock. Quote Link to comment Share on other sites More sharing options...
ocboat Posted April 3, 2021 Share Posted April 3, 2021 I think they are colonial hydroids although I'm far from an expert. I have the in my tank also that came in on some gulf live rock. Quote Link to comment Share on other sites More sharing options...
LadAShark Posted April 3, 2021 Share Posted April 3, 2021 If you google "colonial green hydroids" you pretty much get a spot on image of whatever you have. It's hard to say if they'll definitely be a pest but they very could be if they start to reproduce. I personally would err on the side of caution and put putty on them to wipe them out (hopefully before they've managed to spread). 1 Quote Link to comment Share on other sites More sharing options...
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