I found a 5 gallon glass carboy that is difficult to clean with a brush. There is a scale or deposit inside. Is there something strong I might use to loosen it enough to use a brush? Otherwise, I may have to trash it.
+1 oxyclean...I only ferment in 6/6.5 gallon glass (used to be a wine guy ) Oxy free overnight cleans everything!!! I use 1.5 scoops which may be too much but makes my carboys crystal....and i do not use a secondary...3 weeks in a primary even with dry hop and oxyclean lights it up...
You can't be a real country unless you have a beer and an airline - it helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer.