I just brewed my 3rd biab batch last Saturday and pitched 3 white lab liquid yeast(i was told to do that because the yeast were expired). I was left with 15l and filtered it using a cheese cloth as I pour it in mu fermentation bucket. My fermenter is the typical 30l plastic bucket.
So I was left with 15l of headspace and controlled the temp between 20-22C. But I haven't seen any bubbling from the airlock but it smells like beer.
Should I worry, that my fermentation is not working? How long should I ferment it, if I am filling bottles next?