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Old 02-08-2007, 07:03 PM   #1
Adam's Apples
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I have always assumed, I think stupidly now, that when you guys mentioned partial boils you meant that you boiled the wort in 3 gal water, for example, and then added 2 gal of unboiled tap water.

You don't mean that do you?!?

I now have a boil pot that will hold roughly ten gallons, so would I be better off boiling the wort in a 5 gallon batch (for a 5 gallon brew) so that I boil everything at once?

I previously have boiled all my water, but what I did was boil 2 gallons and stick it in the fermenter, before boiling the wort in 3 gallons and adding that on top... I have never been sure what difference diluting the wort made and simply went by some recipe instructions I have.

Does anyone recommend investing in some kind of aeration device as the water will have less oxygen? For my current brew, which is in secondary, I just shook the fermenter for 10 mins before pitching the yeast and the gravity has come down from 1.045 to 1.008. Can anyone explain what benefits I might see by aerating the wort with some other device, eg aquariam pump?

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Old 02-08-2007, 07:09 PM   #2
Orfy
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Your right about the partial boil.

If you are getting full attenuation in the required time you do not need any further aeration.
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Old 02-08-2007, 07:14 PM   #3
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http://www.homebrewtalk.com/showthre...ght=experiment

Your assumption about partial boils is correct, as well.
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Old 02-08-2007, 09:08 PM   #4
Ol' Grog
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That's DEEP stuff. Anyway, I too have a question on full boils versus partials. If I'm still using kits and I go with a full boil with a kit that calls for a partial boil, I won't have the same outcome as that of a partial? I have read to expect the more hoppiness. I don't understand. Were talking water here, not syrup. I just don't see how you can extract more bittering from the bittering hop addition at the start of a boil with 3 gallons as opposed to 5.

 
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Old 02-09-2007, 05:02 PM   #5
Ol' Grog
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anyone want to take a stab at this???

 
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