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Old 03-03-2013, 10:00 PM   #1
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black bubbels

Recently moved a piece of coral around and found a3/8 in shiny bubble right next to a young feather duster. Not sure what it is. Any ideas?
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Old 03-03-2013, 10:13 PM   #2
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Could you post a picture
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Old 03-03-2013, 11:37 PM   #3
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did it come from the substrate? One possibility is that its a Hydrogen sulfide gas bubble. Its a by-product of anaerobic bacteria consuming organic material.
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Old 03-04-2013, 04:02 AM   #4
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Could be bubble algae, especially if it was near a coral. Google that and see if that's what you have. They're a dark green, almost black color sometimes.
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