OpenSights
Well-Known Member
- Joined
- Dec 9, 2017
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Made a batch of cider Sunday and put it in a brand new fermenter, new airlock, normal action other than once and a while you hear a high pitch whistle coming from it. I checked the seal of the lid, seems fine, bunghole is not torn. I’m not worried about it, just wondering why or if anyone has experienced this before.