Say that you had a wine kit that did not come with a grape pack and you also had a grape pack. If you added your grape pack to the kit, I would expect that the SG would increase due to the sugar in the pack. The question is how much water would you add to make up for the grape kit? I suppose one could take the SG before the grape kit, add the grape kit and mix it well, wait about an hour and take the SG again. I assume it would increase (certainly should not decrease). You could then add enough water to drop the SG down to the original level. Am I thinking right here or am I off base?