Coralline algae?

Irishtimm

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Sorry for the bad picture. I was half way through a good tank scrubbing and noticed 3 blotches of pink on the back glass of my tank. I ran the brush over them and they’re still there. Is this Coralline starting to form?

E3E1BE0E-5EC1-47A1-B8A9-524B2B012B56.jpeg
 

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