On Sep 10, 2012, at 2:06 PM, Nikolay Igorovich Rodionov wrote:
I've tried using add-ion but I haven't had good results.
So what was the problem with the results? The results seem good to me if I add a specific number of ions (depends on the system; in the attached image: 50). If you add ions to neutralize the charge you will get a relatively small number clustered around the solute rather than a larger number spaced throughout the solution.