 Green dust algae
I am curious, since i have heard several people complaining of this algae recently. Unfortunately i have it too, and have had it for the past 2 months. Now usually i would not post for algae issues since 95% are easy to get rid of, but this one is proving to be a tough algae to kill.
The algae is single celled and seems to coat surfaces, plants, equipment, wood, glass etc... If left unscraped it forms a jelly-like layer over its surface and continues to grow. The growth rates of this stuff are phenomenal, it clogs diatom filters within a day with spores. I have, as far as i can tell, a perfect fertilizing regimen with automated dosers and light timers etc... i recently raised NO3 to 25ppm and po4 to 3ppm and added a powerful pump to circulate the water and reduce the algae's ability to stick to things.
If anyone has a straightforward EXPLANATION for why this stuff isnt dying in my tanks, or several other people's please do tell. It seems to grow in the same exact range as our plants do making it frustratingly difficult to kill off. | 
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