Coralline algae

Gdel

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I’ve noticed that my coralline algae gets “pink” in color after a water change but fades back to purple a few days later. Has anyone else noticed this… any idea why it might happen?
 

ActiveAngel

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Yup. This happens.

Due to the nature of algae, i dont know if this is indicative of the top layer dying and regrowing, or if its just a stress response, or something else. But its interesting for sure.
 
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