I've got a semi-sweet that's been in secondary for a few months. It was tucked away in a back corner and I must have neglected it, because when I was moving things around this weekend, I noticed that the level in the airlock had gone too low. When I pulled it out to top it off, I noticed a white line around the carboy at the mead level, and could see something white filtering down as I disturbed it. I can only think this is some sort of infection. My plan is to try to rack out the middle, and if it doesn't taste vile, sulfite it thoroughly. Am I pretty much hosed, or is there a chance this is salvageable?