if you are using 3 piece air locks put a tube over the protruding part of the inside of the airlock. If not, take a piece of tubing and stick it into the bucket lids drilled hole. I have a piece of tubing that fits perfectly inside the bucket lid hole with no grommet. If it’s in a glass carboy they have tops specifically for fermenting that attaches a tube, and has room for a thermometer. If you don’t have that special lid, you can always get large tubing the same diameter as the inside of the carboy. All of the aforementioned should run a hose Into a bucket with sanitizer of your choice.
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