Reefer503 Posted January 28, 2019 Share Posted January 28, 2019 I've noticed these in different areas of my live rock which started as dry rock about 3 years ago. They look spongy with flutes. Quote Link to comment Share on other sites More sharing options...
SuncrestReef Posted January 28, 2019 Share Posted January 28, 2019 Looks similar to a Guancha lacunosa sponge: Quote Link to comment Share on other sites More sharing options...
Reefer503 Posted January 28, 2019 Author Share Posted January 28, 2019 5 minutes ago, SuncrestReef said: Looks similar to a Guancha lacunosa sponge: I used the name you posted and did some more searches and it looks to be Clathrina clathrus (http://species-identification.org/species.php?species_group=sponges&id=177). Should I be worried about them multiplying and taking resources from corals? Quote Link to comment Share on other sites More sharing options...
SuncrestReef Posted January 28, 2019 Share Posted January 28, 2019 7 minutes ago, Reefer503 said: I used the name you posted and did some more searches and it looks to be Clathrina clathrus (http://species-identification.org/species.php?species_group=sponges&id=177). Should I be worried about them multiplying and taking resources from corals? The general consensus I've read is that sponges are good filter feeders to have in your tank. However, I have also seen a few articles suggesting that some sponges can grow large and compete with corals. Unfortunately I don't have any specific knowledge on this species, but it does look like you found a match, so you should be able to do some research on the specifics of Clathrina clathrus. 1 Quote Link to comment Share on other sites More sharing options...
BeardUp Posted February 1, 2019 Share Posted February 1, 2019 Every sponge that has popped up in my tank eventually disappeared. I would not worry unless it gets real big or you start to notice issues with your corals. Just let it clean your water and die off once it has done its job. 1 Quote Link to comment Share on other sites More sharing options...
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