Excessive Fermentation Pressure

Mashing
1

Can anyone describe what, if any, negative effects excessive pressure on the carboy during fermentation has on a beer? I’ve moved away from standard airlocks due to the fact that they clog with kreusen almost everytime I ferment an ale. Excessive pressure build up can’t be a good thing. Just curious how prolonged CO2 build up in the fermenter will effect a beer. Thanks.

Second, what do you guys use as an airlock for a 5 gallon batch in a 6 gallon carboy? I’ve actually stopped using airlocks and blow off tubes and just went to sanitized foil over the top of the carboy. If I get Kreusen all over the fermentation chamber, so be it. I’m done cleaning kreusen filled blow off tubing and airlocks at this point. Thoughts?

2

What do you mean by “excessive pressure” and how are you achieving it?

3

Kreusen jamming the airlock so CO2 builds up in the fermenter.

4

The airlock or lid will blow off before the pressure rises enough to bother the yeast.

5

negative effects? shooting out and all over is a decent negative.
use a blow off tube. http://kennyshomebrewing.blogspot.com/2 … alled.html

6

Good to know. Thanks.

To be honest, I’d rather clean my fermentation chamber (chest freezer) before using a blow off. I get a few uses out of my blow off tube before it’s junk and I’m not interested in losing a batch to infection because I used a dirty tube.