Quote:
Originally Posted by iamfrontosa
Personally I would run GFO less or stop for time being. I would also try to raise NO3 a little either by adding NO3 or feed more.
I think the problem is your PO4 >>> NO3, that's why you have cyno outbreak.
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I had the same problem, then I read up on the Redfield ratio. Worked like a charm for me.