A while back I tried to cold crash for the first time. I wanted to minimize the amount of air (oxygen) being pulled in as the temp dropped so I riged up a tube connected to my co2 tank and put the regulator at ~1 psi. After about twenty minutes I heard a pop as the bung popped out of the better bottle. So now that it is cold outside once ore and I have a beer about to be transferred I was thinking of trying to cold crash once more.
My new plan it to inflate a ballon with co2 then zip tie the balloon to my air lock. My thinking is that any air sucked in will just be from the balloon, thus minimizing the exposer to oxygen.
Any one have any helpful thoughts on this?
Primary - Ciders
Kegged - Two Quid (British Pale Ale)
No need to do any of that. Just put your fermenter into the cold. I cold crashed over 30 batches in 2012 with no oxidation and didn't do anything more than stick my fermenter in the fridge.
Your beer will have a layer of CO2 blanketing it in the fermenter. Even if you do get the tiniest bit of O2 sucked in to your fermenter you still have that blanket protecting your beer.