I tried to search for this but couldn't really find what I was looking for, not really looking for answers just curious if anyone else has experienced this "issue". So I recently started 4th and 5th batches of mead, batches 1-4 have all been 1 gallon batches and 5 is a 3 gallon batches. 1-3 have been in secondary/aging for a while now and also had this "issue". I am not getting any bubbling in the airlock. Batches 1-3 were fine and fermented like I expected them to, so I'm not worried about batch 4. Batch 5 is bubbling like a champ and 4 appears to working when I've done my SNAs it bubbles and has the right aroma. All primary fermentation is done in food grade buckets, I don't know if something weird with the one gallon buckets. Has anyone else seen this happen, thinking about just going to all bigger batches but would like to experiment with recipes on smaller scale.