I have never seen this

[playboateralex]

This strange purple algae looking stuff growing on my live rock. Maybe macro algae?

 

[JonoH]

Need a pic to be sure, but could be a type of sponge also.

 

[playboateralex]

 

[JonoH]

Can you post one under white lights?
It could be a type of Collospongia sp.

 

[playboateralex]

That is with full white.

 

[JonoH]

That is with full white

Ok now it def looks like a type of blue clove polyps - I would suggest removing as soon as possible to stop it overtaking the tank!

 

[JonoH]

That is with full white.

See here - https://www.reef2reef.com/threads/invasive-purple-clove-polyps.816963/

 

[dman2182]

Oh no! Looks like blue clover polyp. I would remove the rock it’s on now so it doesn't spread to your other rocks. I had this in my tank and bummed I had tj remove two established rocks to get rid of it.

 

[rayadog]

100%^

 

[Gumbies R Us]

If you are not able to remove the rock, look into this thread!

How to get rid of blue clove polyps and unwanted mushrooms & palythoas

I have a lot of blue clove polyps ,green discosoma mushrooms and green palys all over my tank that I want to get rid of, any solution to the problem? Have seen someone mention f aiptasia or kalk to kill mushrooms but im not sure. I have to mention that its a mixed reef tank, 80 gallons.

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