Looks like I’ve got a leak. That’s why there’s no bubbles. The fermentation’s happening (the gravity is down to around 1025 from 1035), but the airlock isn’t bubbling. My guess is that the grommit doesn’t quite fit perfectly - it’s a good enough seal to prevent gas leakage up to a certain pressure, but beyond that pressure, it lets it escape. Hopefully it’ll still be OK - it doesn’t seem to be loose enough to let air in. We shall see by Friday, I think. Looks like I’ll have to head out to pick up a new grommit this weekend though.
That and I couldn’t fix my alarm clock last night. We dropped it while painting the rooms, and I think one of the solder joins cracked (not that I could figure out which one). Not an auspicious start, so far. Hopefully it’s still covered under warranty.