Cool!

I'll try the copper pipe treatment.

I have a 4 liter and a 25 liter carboy full of this wine.

The 4 liter is for topping up the 25'er.

I think I'll try it on the 4 liter one first to see what happens.

That is similar advice that I got when I was doing searches on this
board. They were saying to 'rack' to another container through a
copper pipe.

Thanks again!