Hi Joe,
This afternoon I made an F-pack per your instructions and added it to my Concord Grape (which I had "oaked" as you suggested). I think I am really going to like this wine. Thanks for all your help. I used 6 lbs of mixed blueberries, red raspberries and blackberries. I put them on the range with a litte bit of water and let them "stew" at very low temperature to release the juice. I then put the berries in a strainer bag. The wine was moved from a carboy to a primary and I poured the juice that went through the bag into the primary and then put the bag in the primary. BTW, I did add k meta and k sorbate. Lastly, I snapped down the lid to the primary and added an airlock.
Any suggestions on how long to let this in the primary? I am going to take it back to a carboy to clear before bottling.