Dave MN Nano Posted March 17, 2022 Share Posted March 17, 2022 What is this? Right on top of my Favia? Sprung up in 1 day I think. 1 Quote Link to comment
debbeach13 Posted March 17, 2022 Share Posted March 17, 2022 I have no idea. Looks like it might be a polyp being overrun with algae to me. I would probably pull it and throw it away. 1 Quote Link to comment
Ratvan Posted March 17, 2022 Share Posted March 17, 2022 I am with @debbeach13 looks like something has been overrun with algae, maybe a Vermitid Snail tube? I would try and remove it regardless Quote Link to comment
jcrisman2009 Posted March 17, 2022 Share Posted March 17, 2022 Algae with what looks to be Cyanobacteria. Quote Link to comment
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