Looking for some guidance

[iamfrontosa]

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.

I had the same problem, then I read up on the Redfield ratio. Worked like a charm for me.