What is this algae?

salty joe

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1624411272107.png

I copied and pasted this. What kind of algae is it? I have a little bit growing in my tank.
 

AlgaeBarn

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like others have mentioned it is mermaid's cup/wine glass and isn't usually consider invasive and is more of a rarer algae to see in the hobby recently :)

 
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salty joe

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My tank has been running for five years or so and this is the first I saw it. Just a few strands near the surface. I lifted that pic from online.
 

sunken3

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crazy.. i just had some caulerpa pop up in one of my tanks that hasn't had any algae added ever.. a few coral frags over the last month... with no visible algae... must of had some dormant spores or something. I have also had corals lost in fallen cracks and such that have hung on for years to make a comeback when i do some tank re-org...
 

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