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Live Rock

This is a discussion on Live Rock within the Beginner Saltwater Aquariums forums, part of the Saltwater Fish and Coral Reef Tanks category; --> I bought some live rock from my LFS and there is some purple coating looking algae or something on it,....what is that and is ...

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Old 07-10-2008, 02:26 PM   #1
 
Live Rock

I bought some live rock from my LFS and there is some purple coating looking algae or something on it,....what is that and is that good/bad??
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Old 07-15-2008, 09:08 PM   #2
 
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Coralline Algae? Good!

Cyanobacteria? Bad

If it's a hard, calcerous algae, is Coralline. if it's a soft slimy type of coating, its Cyanobacteria.
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