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tygger
08/14/2017, 12:28 PM
Can't tell what that white thing is in the center. Any ideas? Thanks

AlSimmons
08/14/2017, 01:17 PM
Are you sure they're not grains of sand? You might want to use a stick or something and see if you can brush them off.

tygger
08/14/2017, 01:29 PM
Yep, I tried and it seems attached... is it normal for substrate to attached to the top?

hecterma
08/14/2017, 01:38 PM
Could it be zoanthid fungus?

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ozmosis7
08/17/2017, 08:02 AM
Looks like it got burned by something to me.