I am very knew to wine making. I chose the easiest route to take for my first gallon, and I used a gallon of welch's Concord grape juice. I have done everything so far by the book. I put the juice, yeast nutrient, acid blend, sugar, and tannins into a bucket, and added one crushed up Camden tablet. Waited a day, then added my yeast. after 24 hours I added an airlock to the bucket and its been 5 days as of today. Today I racked it into a 1 gallon glass jug and took a hydrometer reading of .991 S.G. My beginning reading was 1.085 S.G. My wine is still foggy at the moment, and my recipe calls for 4 weeks waiting time after racking it into a secondary fermenter. But my question is should I add my Potassium Sorbate now or wait the 4 weeks and then do it? Also if my S.G. reading is as low as .991, shouldn't my wine be clear? Thanks