The Planted Tank Forum - View Single Post - Possible black algae problem...
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Old 11-27-2012, 01:27 PM   #3
Obsessed? Maybe
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Is the tank two weeks old or three months old? That's not clear from your post.

If you're using CO2, you also need to dose ferts. Why aren't you doing that?

How far from your substrate is the light fixture? That's probably going to need to be raised or dulled with window screen even with CO2 and ferts.
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