In the time it takes to dissolve and circulate or one turn of water, which depends on size of the pump to the pool. Normally, the change will happen within an hour or so, and always in the same day. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.