Help cleaner shrimp starting to blacken

[Micro Reef Tank]

In your fire shrimp molt, if there was those black spots, let's hope that it happens the same with mine that never appeared again

 

[greenhorn reefer]

Where'd you get the gorgonian.

 

[Bret Brinkmann]

How long after your last addition until you noticed the spots? I'm wondering how long people should quarantine to help prevent this.