Yeast at low temps

Discussion in 'Homebrewing' started by jlordi12, Jan 15, 2016.

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  1. jlordi12

    jlordi12 Pooh-Bah (1,856) Jun 8, 2011 Massachusetts
    Pooh-Bah

    brewed a IIPA a week ago yesterday. The bulk of the fermentation was done @ 65-70 but as fermentation winds down (bubble or two / minute) I am fermenting around 58ish. Couple questions even at this low temp can I expect full attenuation? As I noted the yeast seems to be still working. And 2, will yeast still do their normal clean up routine at this lower temp? TIA
     
  2. jlordi12

    jlordi12 Pooh-Bah (1,856) Jun 8, 2011 Massachusetts
    Pooh-Bah

    Using wyeast 1098
     
  3. scottakelly

    scottakelly Maven (1,487) May 9, 2007 Ohio

    Why not just place it somewhere warmer? Doesn't seem worth the risk to let it go that low.
     
  4. Brew_Betty

    Brew_Betty Initiate (0) Jan 5, 2015 Wisconsin

    It's better to start cool and finish warm. 1098 ferments fine at 60F ambient in the beginning. Not sure about the end since I warm it up after 5 days of cool fermentation.

    Also, bubbles from the airlock indicate the release of co2 which can happen for a week after the beer is done fermenting.
     
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  5. jlordi12

    jlordi12 Pooh-Bah (1,856) Jun 8, 2011 Massachusetts
    Pooh-Bah

    I could do that. I typically don't like moving the bucket for fear of oxidizing the beer, but my heating pad shit the bed which put me in this predicament.
     
  6. jlordi12

    jlordi12 Pooh-Bah (1,856) Jun 8, 2011 Massachusetts
    Pooh-Bah

    True, wish it played out like that. I don't have a fermentation chamber unfortunately.
     
  7. PortLargo

    PortLargo Pooh-Bah (1,831) Oct 19, 2012 Florida
    Pooh-Bah

    A simple light bulb* will do wonders for heating a fermenter. If you put it in a closet (or large box) it's easy to raise temps. If determined to not touch the fermenter you can make a tent over the bucket with a towel with a bulb underneath.

    And 2, will yeast still do their normal clean up routine at this lower temp?
    With a temp in the 50s you are flirting with a No here.

    *simple . . . as in: no fluorescents/leds
     
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  8. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    Does your bucket suffer 'suck back' when you move it? I have been able to relocate my bucket without experiencing 'suck back'.

    Cheers!
     
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  9. jlordi12

    jlordi12 Pooh-Bah (1,856) Jun 8, 2011 Massachusetts
    Pooh-Bah

    Got this pig back up to 64 with a light bulb and blanket. Thanks man
     
  10. jlordi12

    jlordi12 Pooh-Bah (1,856) Jun 8, 2011 Massachusetts
    Pooh-Bah

    Hey Jack, I get suck back w or w/out moving. Every time temp dives, just need to keep a close eye on it
     
  11. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    What type of airlock do you use: 3-piece or S-type?

    Cheers!
     
  12. jlordi12

    jlordi12 Pooh-Bah (1,856) Jun 8, 2011 Massachusetts
    Pooh-Bah

    3 piece. I do own several of both though.
     
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  13. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    I have seen posts from folks where they state that sometimes the liquid will be 'sucked in' when they use 3-piece airlock. The S-type when properly filled should not introduce liquid back into the beer.

    Regardless of airlock type there will be air introduced into the fermenter when a 'suck back' condition occurs; when the temperature crashes for example.

    I have not noticed any 'suck back' when I have relocated my buckets (e.g., moving it from the floor to a table). I have never experienced any drastic temperature changes in the area where I homebrew so that condition for a 'suck back' does not exist for me.

    For folks who like to cold crash their beer (I personally do not do this), 'suck back' will occur.

    Cheers!
     
    jlordi12 likes this.
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