Thats good to hear. I've always had problems with cyano, even with low nutient levels. Like I said in a reply to Tom. I had posted a few years back a qoute out of the Coral Mag. It was a theory about cyano using iron in low nutrient systems. Heres the qoute.
Nitrogen Fixation
Nitrogen is an important nutrient and one of the essential building blocks of any living organism. It is used in proteins and DNA, among other substances. Because a healthy coral reef has only a very limited amount of dissolved nitrogen compounds, there must be organisms that introduce nitrogen into the reef system. Only very few are able to bind the dissolved nitrogen and make it available to the nutrient cycle (Sorokin 1995), among them cyanobacteria - or "slime algae," as some of them are referred to in the saltwater aquarium hobby. This process is called nitrogen fixation and uses a protein complex that has the nitrogenase enzyme at its center - and again, iron is the active ingredient in this enzyme (Rees et al. 2005), making iron essential for nitrogen fixation. Because cyanobacteria are able to satisfy their nitrogen needs from gaseous molecular nitrogen dissolved in water, it doesn't seem farfetched to hypothesize that cyanobacteria infestations in tanks with low nutrient levels (low Nitrate level) may be caused by surplus iron. It would be interesting to conduct a series of experiments to prove or disprove this theory.
Hmmmm no problems for me. I would theorize that the macro uses it up faster than cyno can. In any case I've had cyno issues in the past but not since my macro grow strong. The macro algae grows way faster, darker and thicker the week after I dose.
Originally Posted by Seph
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