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August 26, 2017
11
See all updates by bigmike015
Why does my sand have purple algae growing on it?
JamesL
Sounds like Cynobacteria. Try increasing flow and reducing nutrients. Might do a search for "cyno" on the forums for tips.
bigmike015
well just did some research, and im about 8 months into it and that seems to be normal i guess
Jimbo662
I turned my gfo reactor off for several days and I had cyano appear. GFO went back online yesterday so it should be gone in a couple of days.