Never used this dry yeast. How long does it typically take to show some activity? I’ve got a dead carboy.
BV
Sometimes 24 hours for me. How long since you pitched?
+1
I use 05 quite a bit, and almost every time just when I’m thinking, how long has it been?, a thin krausen forms, and CO2 starts bubbling through the airlock. It does seem to take a solid day, even under ideal conditions.
Perhaps I am inpatient. Never had to wait this long with any yeast in 17 years of brewing. Pitched rehydrated yeast 8 hours ago.
I use US-05 a lot and I typically see avtivity somewhere between 12-18 hrs. I have had many cases of 24 hrs. Depends on what you want to see to consider activity. You might not have any airlock activity hut the yeast is defenitely doing its thing if all went well prior to and at pitching the yeast. Short start times are not always a good thing. But neither are long lag times. If you go longer than 24 hrs then you can worry.
What yeasts do you usually use ?
I use this yeast most of the time. I pitch direct and don’t rehydrate. Normally see something in the air lock the next morning. I practice no chill and haven’t had a problem yet so I’m usually waiting a day to pitch to begin with!
Thanks for the feedback. It’s about 11 hours and I am starting to get some bubbles in the blow off tube when I shake the carboy. Seems all will be well.
BV
You’ve never had to wait 8 hours to see yeast activity?
“I collect spores, molds and fungus.”
I was thinking more like, “You’ve been brewing for 17 years and you still check your fermentations that early/often?” After my first 2-3 batches, I stopped checking earlier than 2-3 weeks unless it was needed for something like dry hops or temperature adjustment. I’ve never once had an issue with yeast that was DOA, and I just trust it to do its thing after I pitch.
For the most part I pitch my yeast off the stir plate and it’s all jazzed up. With dry yeast I simply rehydrate and that probably accounts for the longer lag time.
I can’t stop looking at mine. I have a clear fermenter for that very reason.
I use a stainless bucket so I won’t get anxious staring at glass with no perceived fermentation. ;D
BTW, going 24 hours or so with US-05 is not uncommon for me.
Thanks Alestateyall… 
Properly rehydrated 12-18 hours
I love looking at mine too. I wait 8 hours or so then check every couple of hours. Part of that is to gain data points on how yeast responds in various situations, but most of it is that I just love watching it bubble. It makes me happy.
Yes, I ferment in a clear fermenter, and I check it day and night like I used to do with my kids when they were babies. And I must confess…I sniff the airlock. Going on 22 years brewing, and the whole thing is still like magic for me.
Yep and I like to aerate the wort…