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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Light damage to beer - sun vs fluorescent
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Old 09-02-2010, 12:24 AM   #1
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Default Light damage to beer - sun vs fluorescent

So it's pretty obvious from what I've read that sunlight is the enemy of beer, with exposure leading to all kinds of undesirable flavors.

My question is, would the little 40W lightbulb in my fridge have the same damaging effects on my beer? My SWMBO has been gracious enough to allow me to put my 3gallon carboy in the fridge to crash cool which I am thrilled about. I'd just like to know do I need to worry about the effects of the fridge light on my beer? We are 3 people to the household, so the fridge is opened a lot and the beer will get exposed to the fridge light a fair amount.

Do I need to worry about this exposure and cover my beer up, or is the light in the fridge to weak to actually cause any damage?

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Old 09-02-2010, 01:16 AM   #2
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No. Incandescent has very little UV, off 99% of the time. Low power. No.

So, do you need to worry? NEVER!

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Old 09-02-2010, 01:24 AM   #3
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just put a t-shirt on it if you are nervous. I'm not a scientist or anything but my fishtank gets algae like crazy from sunlight but not much at all from the light that is on all the time. Not to say it won't happen but straight sunlight and heat are a beer's enemy

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Old 09-02-2010, 01:27 AM   #4
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If it's a fluorescent bulb, it can skunk your beer just like sunlight but if it's a regular light bulb then you're safe as passedpawn said. I also agree with krelja... if you're worred, then cover it. If for no other reason than to put your mind at ease.

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Old 09-02-2010, 01:39 PM   #5
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Wavelengths as high as 500nm (in the visible range) technically do have enough energy to initiate the reactions that cause skunking, though I suspect the chance is negligible especially if it's just in a 'fridge where the light is usually off. UV emissions are something like 1/5th of 1% of sunlight, so again not really a worry.

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Old 09-02-2010, 02:29 PM   #6
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To ease my mind...it's now sitting in the fridge with a red-shirt on.

"Nobody puts Santa in the corner..."

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Old 09-02-2010, 06:34 PM   #7
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Quote:
Originally Posted by Krelja View Post
just put a t-shirt on it if you are nervous. I'm not a scientist or anything but my fishtank gets algae like crazy from sunlight but not much at all from the light that is on all the time. Not to say it won't happen but straight sunlight and heat are a beer's enemy
Aquarium geek here. The reason you are getting the algae from the sunlight is mainly because of the light spectrum. Your aquarium lights lights are producing a different spectrum of light that the algae doesn't thrive in.
Sorry had to chime in on that one. LOL
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Old 09-02-2010, 10:01 PM   #8
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Aquarium geek here. The reason you are getting the algae from the sunlight is mainly because of the light spectrum. Your aquarium lights lights are producing a different spectrum of light that the algae doesn't thrive in.
Sorry had to chime in on that one. LOL
Sweet when the blinds were open my fishtank would look like crap in a day or so. Got some blinds that let no light through except for the light thats in it and I don't have to clean it nearly as often. I'm definately no fish tank nerd so I'll take all the help I can get
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Old 09-02-2010, 10:12 PM   #9
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Is there any way to know how much UV light a fluorescent bulb puts out? I have one above my workbench in the room where I make and store my beer and wine. It has a white plastic dome cover over it but I'm afraid to use it since I'm worried it will skunk the beer in glass carboys just a few feet away.

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Old 09-02-2010, 10:27 PM   #10
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Is there any way to know how much UV light a fluorescent bulb puts out? I have one above my workbench in the room where I make and store my beer and wine. It has a white plastic dome cover over it but I'm afraid to use it since I'm worried it will skunk the beer in glass carboys just a few feet away.
photospectrometer. And yes light is not good, especially if it is on a lot. Put a tshirt over your carboy.
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