Attack of the Bubbles

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David S

Aquarium Advice Addict
Joined
Apr 15, 2009
Messages
1,384
Location
Oxford,England
Is the sand getting green too or is that just the lighting?
It looks like you may have the start of cyano.
 
No the sand isn't green and is miracle mud but taken on camera phone I have posted link to better photo

Any advice??
 
Looks like the nitrifying bacteria doing it's job. I wouldn't worry about it.
 
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