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Old 10-09-2007, 02:55 PM   #1
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Default Blind Curiosity

Here is a question that I am sure has come up before...

If light can damage the flavor of the hops during the fermentation stage, why do we ferment in clear glass carboys and translucent white buckets?

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Old 10-09-2007, 03:02 PM   #2
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Well, we usually cover up our glass carboys to protect them from the light. I've never had an issue with buckets, it seems that not enough light makes their way through to have an impact. I ferment in the basement where it's usually pretty dark, regardless.

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Old 10-09-2007, 03:09 PM   #3
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It's only UV component of light which makes flavor impact.

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Old 10-09-2007, 03:13 PM   #4
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I guess I never thought of it that way. I also ferment in my basement where there is very little light, so it's not an issue for me regardless.

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Old 10-09-2007, 03:33 PM   #5
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I thought the same thing when I started as well. I don't think it matters too much though, even if fermentation were in a UV protected container and was not stored in a dark area anyway, the light would likely raise the temp and cause problems.

regardless, its sitting in a dark place

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Old 10-09-2007, 04:29 PM   #6
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I wouldn't call the plastic buckets translucent either. they're basically opaque.

UV light is the source of skunking. I have fluorscent bulbs, 4x40watts, in my brew room. none of my beer is skunked, and i do all secondary and keg racking in that room.

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Old 10-09-2007, 05:35 PM   #7
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The UV from direct sunlight is over a thousand times as intense as typical florescent lighting.

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Old 10-09-2007, 06:04 PM   #8
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I always keep a dark shirt over my carboys just in case. It also comes in handy just in case you need to clean up an unexpected blow off.

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Old 12-02-2010, 08:37 PM   #9
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.

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Old 12-02-2010, 08:52 PM   #10
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As a new brewer still, I thought people wanted clear fermentation vessels to observe the fermentation process, see the krausen form, see the trub at the bottom, etc, which only clear vessels allow. Of course this comes with the risk of light exposure, so you just cover them up when not looking inside -- easy enough. My impression is that a few minutes of light exposure per fermentation won't affect the beer, but I don't know this for sure either way.

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