Airlock keeps popping off

[Moody_Copperpot]

My buddy borrowed my all grain equipment to do his first AG batch, and has encountered a lot of bumps in the road. The latest being that the airlock on his carboy has popped off twice. He's ony using a five gallon, so I'm pretty sure the carboy is too full. Would it be wise to just pour the entire thing into a six gallon fermentation bucket it to give it some more head room?

 

[Yooper]

It's probably because the lip of the carboy and the bung are wet with water or sanitizer. Have him dry it carefully with a clean papertowel and put the bung back in when it's dry. He will probably need a blow off tube, though, if he's got 5 gallons in a 5 gallon carboy.

 

[Moody_Copperpot]

That's what I kind of figured. So the blowoff tubes don't clog as easily?

 

[michur]

I haven't had any problems with blowoff tubes. Just check it from time to time to make sure things look good and it's clear.