White spots on live rock

[bolbag]

Woke up today to see these white spots growing on some of my live rock. Anyone ever see this before?
The spots appear to be solid, but cant tell for sure.

I recently added some CaribSea Purple Up coralline accelerator. Not much and only used for about 1 week. Possible calcium build up?

Thanks!

 

[Chris A.]

If you have a clean up crew, they ate the algae on the rock

 

[tmanmtb]

+1 for the cleanup crew did it.


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