Super Stealthy Fermentation

Discussion in 'Homebrewing' started by chrunck, Jul 10, 2017.

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  1. chrunck

    chrunck Devotee (329) Jun 12, 2013 New Mexico

    Anyone ever have a fermentation that gave no visible signs of fermentation?

    I hadn't seen any bubbles for a couple days after pitching Wyeast Brett Brux into my sour wort, but I didn't worry too much, just figured it was slow to start (I didn't do a starter). After 4 days, I got worried and popped the lid to see no signs of fermentation--no krausen, wort looked unchanged. I gave the bucket a swirl and saw some positive pressure build over the day, but it was very far between bubbles. I figured it was the lacto still working rather than the yeast. I was drinking a Prairie Brett C that night, so I threw in the dregs to try to get it started.

    Day 5, same thing, didn't look like anything had happened. I pulled out about a cup of wort and put it in a nalgene bottle with some dregs from Urban Family Brett Baby Cakes to see if I could create a makeshift starter (I do all grain and don't have any DME to make wort quickly). No activity after ~36 hours, so I thought maybe the acid was killing the yeast, but the pH was at 3.2, so I didn't really expect that to happen.

    Day 6 (today), I did what I probably should have done sooner and took a gravity reading. It dropped to 1.010, so clearly fermentation happened, but it was the stealthiest fermentation I've ever experienced. I'm certainly no seasoned veteran--10 clean brews, 4 sour brews to date, still learning all the time--but I've always had a krausen form and scum stuck to the side of the bucket. This had neither and totally caught me off guard.

    I'm going to take another measurement in a couple days and see what's going on. I was planning to do a secondary with fruit for a month or two (which will be my first time using fruit). How much time should I give it before transferring to secondary?
     
  2. MostlyNorwegian

    MostlyNorwegian Pooh-Bah (2,236) Feb 5, 2013 Illinois
    Pooh-Bah

    You're not exactly dealing with quick workers. If you are using a carboy. I'd just shine a bright as jesus flashlight in there and see if I can habituate my eyes towards any work happening. It might take a minute, but typically when I do that. I notice there is all kinds of work happening which I would never otherwise notice and I take my gravity readings and verify it.
     
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  3. chrunck

    chrunck Devotee (329) Jun 12, 2013 New Mexico

    I ferment in a plastic bucket, though I've considered switching to glass so I can see what's going on. I do small batches (1-1.5 gallon), so glass wouldn't be too heavy to deal with.

    I had pitched the other half of the Brett Brux (I typically split the Wyeast pack into two equal halves) on a beer the week prior and it chewed through it in the usual amount of time (2-3 days). Differences were that the previous beer was at pH 3.4 vs 3.2 when I pitched, and for the more recent batch the yeast had been in a tupperware container in the fridge for a week.

    I haven't had any problem with leaving half the yeast in the fridge in the past, though this one wasn't a smack pack, so maybe there were fewer viable yeast after a week?
     
  4. dacaroglu

    dacaroglu Initiate (0) Jul 16, 2017 Türkiye

    hi. I got a similar problem. it's been 6 days of fermentation but no co2 on airlock krausen is looking really good but where is the co2 out. I've checked plastic cover and i am 99% percent sure there is no leakage on cover side.is my beer gonna live :slight_smile:
    my beer kit is American Pale Ale with m44 US West Coast yeast
    here is the picture of beer lid opened https://pasteboard.co/GBbJ1XN.jpg
     
  5. GormBrewhouse

    GormBrewhouse Pooh-Bah (2,111) Jun 24, 2015 Vermont
    Pooh-Bah

    Buckets can and do leak at times. Check the seAls and airlock gaskets, but if your fermenting you should be fine. Personally when racking to secondary I use glass or plastic carboys so I can see what is happening and if I'm soaking wood or fruit, nibs, I know the bung is seated firmly.
     
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