I ferment in a glass and have always been in the habit of covering the carboy to protect it from the light. In the end, does this protection from the sun really matter?
I have heard that it doesn’t matter for dark beers bit I do it anyway just in case. I have old pillow cases with holes for the airlock.
Yes, it matters, but it matters more the lighter the color. In order to become light struck (skunky) it needs to be light penetrable, have hops and have a byproduct of fermentation (riboflavin).
I cut a small hole in the bottom of a brown paper shopping bag and cover my carboy with it. (With the bag, not the hole.) 
I wanted to post a picture of what I do, but when I click attachments below, nothing happens. How do you post photos on this site?
I have had a glass of beer get light struck out doors in a matter of minutes in low level sun light. You wouldn’t want that to happen to your entire carboy of beer! Definitely best to keep it covered.
how do you post a photo on this site…
You have to either copy a link from a photo storage site such as photo bucket or directly from a phone using tapatalk.
So you can’t just upload a photo from one’s computer?
Nope.
There is a sticky that explains how to do it.
How do I include an image in my post?
https://www.homebrewersassociation.org/forum/index.php?topic=20
You’re welcome. 8)
Very nice, chumley!
Thanks Chumley. These are the photos I wanted to post. Chumley took it from another forum. Anyway this is how I cover my carboy’s.
I’m not on any forums other than this one so I have always assumed all forums were a PIA to post pictures to. Apparently not.
One of the best things about Tapatalk is how easy it is to post pictures here.
I agree about tapatalk making it easier if you have a picture on your phone to post. If someone doesn’t have a smartphone or the picture is elsewhere its not very intuitive though. If I want to post a picture with more than a little text I actually type the text on a pc and post with tapatalk.
Is Tapatalk Mac compatible because I am completely in the dark as how to use it.
Not sure, I have tapatalk on android. If I have a picture on my phone I want to post all I have to do is start a post either by replying or new topic (if you use “quick reply” you need to hit the + sign to get the options) then hit the camera icon. From there the phone gives me options on how to access the picture and then select the picture.
Nice setup bierview. I still have one of those three bubble airlocks.
My wife got pretty ticked at me this weekend
when I covered my carboy with that “fancy” hoodie she got me for Christmas. ???
Gotta keep the beer warm 