What do you think of this algea? (pics)

mademperor

mademperor

Go Go Rock Bass!
Jul 5, 2007
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Buffalo, NY
My old rocks had this algea grow on it. I've since removed all the rocks besides this one. I will be replacing this rock on thanksgiving.
Any idea what it is, how to prevent it?

Oh yeah, that algea grew before I got the plants and before I started dosing Excel.

algea.jpg
 
Is it slimy feeling or more fuzzy-like? It looks almost like cyanobacteria to me, which can be caused when nitrates bottom out in a planted tank. The fact that you got it before the plants tells me its probably something else though.
 
I prefer a little algea on rocks and driffwoods, it makes it looks more natural. Just dont let it get out of control. It's a nice looking rock by the way.
 
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