[gmx-users] adding NaCl to water box

Madhuri Agashe magashe at CLEMSON.EDU
Tue Jan 13 21:32:00 CET 2004

I am trying to add some charged ions to the water in my existing system.
My requirement is to add 7 Na and 7 Cl ions to the system. 
How do I do it?

Is it possible for me to modify .gro, .itp and .top files of my existing
water box system to replace randomly selected water molecules with Na/Cl

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