Answer the question that was asked please . You go on to speculate about things you clearly don ' t know anything about , why would you impose on others to explain to you why you are wrong when resources are readily available ? <| sep |> marinate on that <| sep |> Thats an interesting idea for a skin . A tier 2 at least <| sep |> January 2014 in Tokyo <| sep |> I assumed it was happening via infection due to no sterilization of the sugar when using the drops . If you use priming sugar usually you boil it for a few minutes and it kills what ' s living in the sugar . If you just take a carb drop out of the bag like I did and plop it in whatever ' s living on it is going in too . I only used them on a few batches but every one had stable gravity before bottling and every that sat more than a couple weeks past carbing up got way over carbed . I should not none physically exploded , but they couldn ' t have been far judging by what happened after uncapping .