Is this cyano bacteria or coralline algae?

[Maridia]

Is this good or bad? Should I try and get rid of it?


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[Bectan01]

Is it soft? Does it come off easily? Then it's cyano, if it is hard then coralline. Although I've never seen coralline that dark before...


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[PB_Smith]

it's coralline. if it were cyano you would also see little bubbles forming under the mat and it would have little streamers floating off it.
Pretty sure it's coralline that you have growing.

 

[BigRedsReefs10]

I'd say a little of both honestly. It looks like some of it is slimy and some isn't. Of course that's just a guess based on the pics, touch it, if it's slimy it's cyano, if it's hard it's coralline.

 

[Ingy]

I had that before. It's a velvety type of coraline algae. Someone once gave me the name but I forget. Not cyano bacteria tho.


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[Maridia]

Is this something to be embraced or should I try and get rid of it?


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[Sillyfishies]

Is this something to be embraced or should I try and get rid of it?


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Slimey - get rid of Hard- Keep