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Fermenter *very* foamy

  • 26-10-2020 7:26pm
    #1
    Greyjoy
    Registered Users, Registered Users 2 Posts: 545 ✭✭✭


    Brewed a stout kit over the weekend and the fermenter is incredibly foamy - it's even bubbled up through the airlock and filled it. Should I loosen the lid to release some pressure or maybe take the airlock + bung out and cover with kitchen towel until the foam head subsides?


Comments

  • #2
    irish_goat
    Moderators, Recreation & Hobbies Moderators Posts: 5,838 Mod ✭✭✭✭irish_goat


    Greyjoy wrote: »
    Brewed a stout kit over the weekend and the fermenter is incredibly foamy - it's even bubbled up through the airlock and filled it. Should I loosen the lid to release some pressure or maybe take the airlock + bung out and cover with kitchen towel until the foam head subsides?

    Did you leave much headspace?

    Definitely best to clean and resanitise the airlock. Not ideal either but you could scoop some foam out with a sanitised spoon and then try and put the lid back on.


  • #3
    Greyjoy
    Registered Users, Registered Users 2 Posts: 545 ✭✭✭Greyjoy


    There was about 3" of headspace above the brew (it's a standard youngs 25L bucket) so about 19% of empty space.


  • #4
    mordeith
    Registered Users, Registered Users 2 Posts: 5,278 ✭✭✭mordeith


    Greyjoy wrote: »
    There was about 3" of headspace above the brew (it's a standard youngs 25L bucket) so about 19% of empty space.

    How warm is it?


  • #5
    Greyjoy
    Registered Users, Registered Users 2 Posts: 545 ✭✭✭Greyjoy


    mordeith wrote: »
    How warm is it?

    Thermometer has it about 24 C. Reading online about foaming overflow seems to suggest a "blowoff tube". Might right something up with some tubing and a spare demijohn I have.


  • #6
    irish_goat
    Moderators, Recreation & Hobbies Moderators Posts: 5,838 Mod ✭✭✭✭irish_goat


    Greyjoy wrote: »
    Thermometer has it about 24 C. Reading online about foaming overflow seems to suggest a "blowoff tube". Might right something up with some tubing and a spare demijohn I have.

    That's too warm. Should ideally be around 17/18c for a stout.


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  • #7
    Gooey Looey
    Closed Accounts Posts: 1,297 ✭✭✭Gooey Looey


    Some of the brews I use I don't use an airlock for the first few days, I run a tube to a saucepan of sanitiser and and keep the end of the tube under the sanitiser weighed down with a spoon. I add an airlock when it settles down


  • #8
    Bogwoppit
    Registered Users, Registered Users 2 Posts: 2,944 ✭✭✭Bogwoppit


    I never use a an airlock anymore, a blow off tube will keep things from getting messy though.
    24 is way too high though, keep it at 18 or so in future.


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