What is happening to this coral?

Hammer100

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IMG_0580.JPG
 

LobsterOfJustice

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Looks like STN “slow tissue necrosis” a slow die off usually from the base up. Parameters could be off, toxin/contaminant, pests present...
 

stephj03

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Where on the coral did this begin? How long did it take for this much to occur?
 

When to mix up fish meal: When was the last time you tried a different brand of food for your reef?

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