Originally Posted by eighteez
what the book I'm reading says is 1-5 bubbles per minute max on the airlock means primary fermentation is completed.
Would you agree?
The only accurate "sign of fermentation" will tell you what is happening is your hydrometer reading. "Airlock bubbling" that is NOT a trustworthy thing to go by.
Whether it's in a conical, a bucket, or a carboy, it's the same thing. An airlock is a VENT, a VALVE to release excess co2, nothing more.
If it's not bubbling it just means that there no excess co2 to be vented out.
A beer may ferment perfectly fine without a single blip in the airlock. Or can stop bubbling when the yeast STILL has a lot of work to do.
That's why you need to take a gravity reading to know how your fermentation is going, NOT go by airlocks. The most important tool you can use is a hydrometer. It's the only way you will truly know when your beer is ready...airlock bubbles and other things are faulty.
The only way to truly know what is going on in your fermenter is with your hydrometer.
Like I said here in my blog, which I encourage you to read, Think evaluation before action
you sure as HELL wouldn't want a doctor to start cutting on you unless he used the proper diagnostic instuments like x-rays first, right? You wouldn't want him to just take a look in your eyes briefly and say "I'm cutting into your chest first thing in the morning." You would want them to use the right diagnostic tools
before the slice and dice, right? You'd cry malpractice, I would hope, if they didn't say they were sending you for an MRI and other things before going in....
Thinking about "doing anything" like repitching, or bottling, or racking, without first taking a hydrometer reading is tantamount to the doctor deciding to cut you open without running any diagnostic tests....Taking one look at you and saying, "Yeah I'm going in." You would really want the doctor to use all means to properly diagnose what's going on?
Fermentation is thought to have finished when the gravity has not changed for 2 readings over three consequitive days.