I've been helping my young neighbor get started in wine making. We both made a Cranberry wine after Thanksgiving, then used the lees to make a cranberry-lemon-lime SP. Mine cleared perfectly with the sparkoloid; his ( at his house) didn't, after 8 days. Only thought was his wasn't de-gassed enough. So I let him borrow my vacuum pump etc & he de-gassed for an hour & massive amounts of gas came out. Now if it doesn't clear can he add more sparkoloid? Or?? He did rack off the lees before the vacuum de-gassing. Roy