I was unclear - that is what I meant by "racking with moderate
aeration" - I racked and allowed the wine to splash into the carboy. I
intend to monior (with my big nose), and rack again in 4 weeks if
problem persists. If it persists after that, I will try copper. I think
I'll try some bench trials with the copper wire first (see Rob's post)
- and then try a bench trial with CuSO4.
What I think I need is some guidance on levels. As I understand it, apx
25% of CuSO4 is copper. And half of that will be active when applied in
the wine? I also understand that something like .5% is legal limit? So
if I use a 1% concentration ... etc. I need some info on those
parameters.Got any thoughts?