It means your airlock is bubbling.....Gas expands and contracts due to all manner of things, temp swings (you cold crashed, now it is warmer) changes in atmospheric pressure, or gas gets released from the trub layer due to traffic rumbling on the road, the vacuum cleaner going, the dog trying to hump the fermenter....That's WHY we tell you that airlock activity isn't a good indicator of whether or not you have fermentation . Because SO MANY other things can cause airlocks to start AND stop....That's why I basically say, ignore your airlock....
Like my snazzy new avatar? Get Sons of Zymurgy swag, here,
and brew with the best.
Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman
I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew