airlcok bubbling is NOT an indication of whether a fermentation is strong or week!!!
Biggest advice I can give you.....Quit treating your airlock like some sort of calibrated fermentation gauge!!!!
Airlock bubbling, lack of airlock bubbling, stopped airlock bubbling, fast airlock bubbling, slow airlcok bubbling, heavy metal airlcok bubbling, or disco airlock bubbling really is not an indicator of what is happening to your beer.
It is NOT a fermentation gauge, it is a valve to release excess pressure, excess CO2...NOT AN ACCURATE INSTRUMENT....I have 9 different fermenters and have been brewing for a few years, and OVER HALF OF MY BEERS NEVER HAVE ANY BUBBLING IN THE AIRLOCK AND THEY ALL TURN OUT FINE!
Fermentation is not always "dynamic," just because you don't SEE anything happenning, doesn't mean that anything's wrong, and also doesn't mean that the yeast are still not working dilligantly away, doing what they've been doing for over 4,000 years....
Fermentation can take weeks, fermentation can take days, it doesn't matter, all that matters is the numbers on your hydrometer.....If you've oxygentated, and pitched plenty of yeast, then you SHOULD reach your yeast attenuation, and get close to the final gravity.....that is all that is important...NOT whether or not you airlock goes "blip" or "Rattattattatta!!!!"
So, get out of the idea of using "airlock bubbling" as a sign of fermentation, you have to realize that airlock activity is not an accurate indication of fermentation...an airlock is a vent for excess co2, nothing more...and half of my beers never bubble.
Read this for why arilock analysing is useless, and what is the only gauge of ferementation...http://www.homebrewtalk.com/1217925-post3.html
And there is a link to my blog in there as well....
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.....
So ignore your airlock, ok????