DR.,
I noticed this..."I am using GFO/carbon with intermittant bacteria".. and had some thoughts.... might be wrong.
Bacteria need a source for C, N, and P. We dose C (vodka, suger, etc) because the bacteria are carbon limited and will not reduce N and P if not allowed to grow. If you use GFO, will you not be P limited and thus the bacteria will not grow, and thus N will remain high?
I am sure someone out there knows the exact ratios of C-N-P, but if P is low and N is high, how can adding C work?
Steve...any thoughts?
Ken