There are a lot of possibilities,
Where did you buy your fish from?
Placing the coral in the tank stressed the fish
The fish are fighting with each other.
What fish of yours is showing ich? What are you feeding, hows your water quality?
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
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