Now I see a problem I am going to have when I move my other batch from primary to secondary. I do not know what my starting gravity was. It has been sitting 5 days. I realize now that it's gonna be a problem. What should SG be after a week? I have 3/4 gallon blackberries and 1 lb sugar in the must. The must is roughly 3 quarts combined . Has 2 1/2 quarts water.