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D.Schneidt

Aquarium Advice Regular
Joined
Dec 16, 2012
Messages
74
Just over the past I'd say 3 days I've noticed this in a few spots in my tank. What is it?
 

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The reddish stuff?

Based on the "new" look of the rock, my first guess would be Diatoms, second would be some sort of algae.
Both are things that a new system will go through during the first few months ... neither bad or good, just part of the system stabilizing.

My third option would be possibly the start of Coraline Algae... less likely than 1 or 2, but certainly a possibility.
 
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