What is this?!? Weird blue algae.

chicklets

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Hi guys! I went out of town for 2 days and came back to this in my tank. It's in the back by my carpet anemone. I have never seen anything like this! Anyone know what this is? No new additions except a wrasse a few weeks ago.
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33bcf987a138c0ad5e0294d994299080.jpg
 
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I have something similar also. I'm going to hope on board with this post because I have no clue also haha hard to see in this picture but it's definitely there. Sorry I can't be of help
 
Thank you so much! I've never seen it be blue like that!
 
Just google cyanobacteria and you will see Wikipedia also calls it blue-green bacteria.
 

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