Algae on Coral?

mmcdade

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Any idea what's growing with the coral and what to do about it? We removed the plug from the tank and carefully picked out as much as possible a couple of weeks ago and now it's back.

p.s. The color is washed out but and the coral is actually quite vibrant and healthy.
C4C46FD4-81F2-4E84-8282-F6BF0AC63EB0.jpeg
 

Just grow it: Have you ever added CO2 to your reef tank?

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