Cyano?

[mwbeach]

Need help finding out what this is and what to do about it

 

[MattL22]

Is that all u got ?

 

[MattL22]

Or it's in several spots ?

 

[mwbeach]

One small spot a couple inches from there. Not much

 

[Reefing Madness]

Looks like Red Coralline to me. Is it hard to the touch, not easily wiped off the rock?

 

[1guydude]

+1 ill back that up. looks like red coralline aglae. COralline comes in red, blue, green, purple is most common.
hths
-d