Not too sure what this is

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Molson_28

Aquarium Advice Activist
Joined
Sep 25, 2013
Messages
180
image-3559009331.jpg have this growing all over my rocks. Any idea what it is?
 
Either algae or mold. Either one is harmless. Take them out and scrub them under running water to get rid of it. You may be over feeding that's why it has grown
 
Ya it's algae. Gonna feed less and not keep the light on so long. Upping my water changes
 
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