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Old 08-06-2013, 02:14 AM   #11
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Originally Posted by certaut View Post
Sometimes I ferment outside (80~100 degrees) *
Don't do this, unless you're brewing a style that requires high temps with the appropriate yeast. Otherwise, you'll get off-flavors for sure.
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Old 08-06-2013, 02:41 AM   #12
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my temp is 71-74. I am using us-04 dry yeast

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Old 08-06-2013, 03:08 AM   #13
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my temp is 71-74. I am using us-04 dry yeast
Too high! Good temperature control is one of the key factors in making great beer.
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Old 08-06-2013, 03:30 AM   #14
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Too high! Good temperature control is one of the key factors in making great beer.
Indeed, the ideal range for S-04 is 59-68F (Per the Fermentis .pdf on S-04).

If you don't have a fancy fermentation chamber, you can do what I do and put your fermenters in a water bath and add ice packs/frozen water bottles 2-3 times per day to keep the temps in the mid-60's. It really does make a difference in quality.

If you want a more forgiving yeast strain for next time, I can recommend US-05. However, it still prefers to be below 71F.
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Old 08-06-2013, 03:39 AM   #15
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i doubt you'll have any problems. As mentioned above as long as there was enough positive pressure it'll keep the dust from entering and its a layer of co2 even if you lost pressure so no oxidation worries there either. This is the reason most people use a blow off tube instead of the small air locks.

Also a big negative on shaking the container just to get the hops, yeast, and the rest of the trub off the sides. Whatever was cooked with the wort is basically toast now anyways. All your doing now is just having the yeast ferment and the beer start aging.
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Old 08-06-2013, 09:59 PM   #16
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With regard to fermentation temperature, it's also important to note that you are interested in the temperature of the beer, not the ambient temperature of the room the fermentor is in. Fermentation is exothermic and it can raise the temperature of the beer by as much as 6-8 degrees. So if you didn't know this, and you think you're fermenting at 71 - 74, the beer is probably closer to 78 - 80, which is WAY too warm.

If you can score a chest freezer off craigslist and add a $20 temp controller, it's worth it. Constantly changing frozen water bottles is a lot of hassle.

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Old 08-07-2013, 11:12 PM   #17
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I will look into that.

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