AHS 7.9 gallon plastic bucket too big?

Is the 7.9 gallon bucket they carry too big for a 5 gallon batch? Will that much headspace have a negative effect? I really wanted a 6 gallon bucket as my primary fermenter, but all they have is 7.9 gallon. That seems big to me.

it will work fine. I get 3 1/2 gallon to 5 gallon food grade buckets for free from the local grocery store delis and even store my grain long term in them.

Nope, not too big. I have had one batch in a AHS bucket blow off, in fact.

If you want 5 gallons of finished beer, you'll want to have about 5.5 gallons of wort in your fermenter.

You will be glad to have that extra space when you brew something that throws up a big krausen!

GT

No. For fermentation, I use the US Plastics 7 gallon bucket, and yours is only about a gallon larger. One of my motives in going to this somewhat larger bucket is revealed in the previous post: to give a taller headspace for krausen. When fermentation begins, the yeast will fill up that headspace with CO2. Once a blanket or "pillow" of CO2 is formed on top of the fermenting beer, being heavier than air, it will not move unless it is blown out or otherwise displaced. Therefore no O2 can come in contact with the beer, and you'll be fine.

thanks for the replies, everyone. I'll grab one of those buckets on my next order. it'll be easier to make this beer https://www.homebrewtalk.com/f85/blood-orange-hefeweizen-98579/ with a pale than trying to squeeze 4 oranges into a carboy.

Easier to carry, and to harvest yeast from too.