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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Ferment 2.5 gallons in 3 gallon BB?
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Old 02-13-2011, 03:59 AM   #1
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Default Ferment 2.5 gallons in 3 gallon BB?

Would it be pushing it to try to ferment 2.5 gallons in a 3 gallon better bottle?

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Old 02-13-2011, 04:22 AM   #2
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yes it would be pushing it. Secondary in a 3 gallon is good.

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Old 02-13-2011, 04:53 AM   #3
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It's a good ecuse to get a larger fermentor! I mean come on, I just spent $23 dollars on a 8 gal plastic tube just to have something bigger then my 6.5 gal glass carboy. I seem to push the limits of my carboys but who does not want more beer!

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Old 02-13-2011, 10:21 PM   #4
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I dont want bigger. The only reason I ask is because I want to start experimenting by splitting 5 gallon batches in half, and only two 3gallon BBs will fit together in my ferm fridge (becuase they are square-ish).

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Old 02-13-2011, 10:40 PM   #5
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Just put a blow off on it - you will be fine.

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Old 02-13-2011, 10:47 PM   #6
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Fermcap-S

Problem solved. Don't make it difficult.

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Old 02-14-2011, 12:02 AM   #7
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Quote:
Originally Posted by SKMO View Post
Fermcap-S

Problem solved. Don't make it difficult.
+1

Fermcap-S works great. I do 4.8G batches in 5G carboys with no problems!
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Old 02-14-2011, 12:06 AM   #8
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Haha, I just thought of Fermcap-S and came to the thread to see if anyone had mentioned it. Good idea, definitely going to go that route. Thanks

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Old 02-14-2011, 12:13 AM   #9
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Quote:
Originally Posted by JoeBronco View Post
yes it would be pushing it. Secondary in a 3 gallon is good.
Why is it pushing it? I PRIMARY it all the time.....2.5 gallons is perfect for a 3 gallon better bottle.Is this speculation or experience?

Every batch I've EVER fermented in my 3 gallon BB has been 2.5 gallons, and I've never had a problem.

Please not in this picture where the 2.5 gallon mark is...and how much room there is above it.



And I've never need fermcap in it either.

I think I've even squeezed a 2.75 gallon in there....you see where the graduations are...
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Old 02-14-2011, 03:56 AM   #10
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Speculation. Mostly if it will be too little room and blow off like crazy. I'm going to use blow off's regardless just in case (and I like to hear the fermentation by the bubbles hitting the bottom of the growler so I dont have to open the fridge)

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