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Unread 05/30/2014, 02:17 AM   #224
DNA
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Join Date: Oct 2001
Location: Iceland
Posts: 1,516
Mandrieu, this looks like dinos and cyano to me.
The orange arrow points to dinos and the rest would be cyano, most likely on top of more dinos.

Try to shut off all your pumps and blast your all your rocks with a powerhead, looking for a subtle dust blowing off and later forming strings in the water column.

If that is still inconclusive take samples from the brown areas and look at it through a microscope.
Cyano is more purple usually. I don't think you will have problem deciding between diatoms and dinos.

Since they come and go daily and you have had them for 5 months I'd expect dinos.

My dinos do not always look the same, sometimes it's just dust, very small strings and no bubbles or very long stings with lots of bubbles. Individuals produce small gas bubbles that travel up the string and form larger ones that eventually break lose.


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