Just to add here Jim, I have perused so many articles that talk about pouring 
off the liquid and leaving the sediment, shaking the bottle, or whatever, and 
have to say this must be due to high concentration of silver in the solution as 
I have never experienced this in all the years I have been making it.  I have 
as a deliberate act for experimental purposes only just to see what it is they 
all talk about.

N.