I am morphing several skills to have poison damage on my bow, such as poison injection, acid spray, and the snipe one. Do they stack of overwrite each other? Also if I was to say but with acid spray and hit again does it simply refresh the dot, so if I keep hitting with acid spray and refreshing the dot is it actually ticking. That is all I can think of now, do they overwrite of stack and does refreshing it via multiple uses of the same skill prevent it From actually ticking.