What kind of Algae is this?

Northstar24

The Tang Herder
What kind of algae is on my dry rock? This doesn't look like diatoms, or hair algae. The rock that I have with coraline is not having issues, just the dry rock. My coraline has started spreading to the glass and the overflows, but not my rock. I'm guessing its because of this algae. I'm light on cleaning crew currently (1 Brittle star, 10 hermits, and 20 astraea snails) I can add more CUC but I want to know whats going to be most effective against this algae

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I don't know...maybe it's more of a chemical reaction that the dry rock has to go through rather than an actual algae bloom? I just don't know.
 
Thanks PRC - I havent seen any real coral growth in my tank, just trying to figure out if the coloration/algae on the rocks is something to worry about.
 
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