I did a Triton and the results showed 1119 mg/L of sulfur. It mentioned bacteria may bloom under these conditions and listed fish food as a source. I feed flakes which I think maybe the source. Manual removal of the cyanobacteria and more focused feeding to reduce wasted food have just about eliminated it. It doesn't seem to be growing back like it used to. I never changed my lights for cyanobacteria, but I have reduced my photo period for dinos which also resulted in reduced hair algae growth. Didn't seem to make a dent in cyanobacteria though.

