I made Irish Stout a month ago and decided to use the extract in a plastic jug I had kept in the cold basement. Made it, seemed fine nothing looked bad or spoiled. Used whirlfloc half tab last 15min and when I cooled it down obviously all the stuff was at the bottom. Dumped the trub in the carboy too. Is this how whirlfloc suppose to make it look? First time using it since stout doesn't count as its soo dark.