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What's going on here

MadReefer

MadReefer

Staff member
NJRC Member
Moderator
Noticed this dark color on my yellow scroll. It just started coloring up in new tank. Looks like a crack but its hard. Should I be concerned?
 

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DangerDave

DangerDave

NJRC Member
I can’t really tell from the pic, but it kinda looks like it receded and something is growing on it. Can you get a better pic?
 
MadReefer

MadReefer

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NJRC Member
Moderator
It's hard stuff growing. Doing a peroxide dip today as I bought some coral at ReefCo.
 
MadReefer

MadReefer

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NJRC Member
Moderator
Best I can get during peroxide dip.
 

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DEL

DEL

Vice President
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Board of Directors
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I had the same years ago when I had a scroll/cup coral. I was told break off the piece because it can infect the rest.
 
MadReefer

MadReefer

Staff member
NJRC Member
Moderator
I brushed it with a tooth brush and looks like a type of algae.
Will see how it goes.
 
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