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Old 12-20-2013, 10:47 PM   #11
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You know, now that you mention it my tubing is pretty cloudy. I figured it was from oxyclean. It definitely is not as clear as it was when new. How do you rinse it out to get rid of that film?

I think I may have a smoking gun.

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Old 12-20-2013, 10:50 PM   #12
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One thing that has come to mind. I don't aerate very well. I usually just pour in the yeast after some shaking of the fermenter. Could that be a big problem?
You describe the off-flavor as being sour, which is usually indicative of bacterial contamination; however, it's also possible that you are detecting Acetaldehyde. Acetaldehyde is often described as a green-apple-like flavor, but I think it could very easily also be described as sour.

I also had a very bad Acetaldehyde problem in my first several extract beers. My usual solution was to let it age for a couple months, and eventually the off taste would simply go away.

At about the time I stopped using my secondary fermenter, the Acetaldehyde taste almost completely disappeared from my beers. I think I was unintentionally oxygenating my almost-finished beer. The flavor always seemed to intensify after bottling, just as you are describing.

More information about it can be found here.
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Old 12-20-2013, 10:52 PM   #13
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I dont think it's the tubing, tubing will cloud from the oxyclean over time.

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Old 12-20-2013, 10:56 PM   #14
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You mentioned that you add spring for water. What is the source? Perhaps that could be the common thread.

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Old 12-20-2013, 10:58 PM   #15
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I think VT-NAV is on the right track. How long are you waiting from brew day to drinking?

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Old 12-20-2013, 11:00 PM   #16
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You know, now that you mention it my tubing is pretty cloudy. I figured it was from oxyclean. It definitely is not as clear as it was when new. How do you rinse it out to get rid of that film?

I think I may have a smoking gun.
The tubing could simply have some scale from Oxyclean clinging to it. I never used Oxyclean, so when my tubing started looking a little cloudy, it was clearly something else.

Anyway, an overnight soak in Straight A had my tubing looking like new.

Tubing is very cheap though. I would just shell out $2 for new tubing and just change my cleaning process moving forward.

Something else to consider - Oxyclean is effective, but can leave behind a film. PBW is also effective, leaves behind no film, but is prohibitively expensive for a cheap-skate like me. A good alternative might be to look into making your own PBW-like cleanser using a 70/30 mixture of Oxyclean and TSP/90. More information here.
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Old 12-20-2013, 11:00 PM   #17
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StarSan will make tubing cloud up like a mofo, even though it's sanitary.

Just to throw out a thought, maybe you're just sensitive to what people call the "extract twang." I've never tasted that, but then I've only ever brewed one extract batch before I went all grain. Just to hypothesize.

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Old 12-20-2013, 11:03 PM   #18
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I've thought that could be the case as well. I just opened up a room temp Flat Tire clone. Yuck.

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Old 12-20-2013, 11:07 PM   #19
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My guess is not waiting long enough for the process to complete....

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Old 12-20-2013, 11:13 PM   #20
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Heh, Someday you may intentionally plan on brewing sour beer!
Don't throw em out or dump them in case of that eventuality.
How are you sanitizing the bottle-caps?

Maybe you could switch to full volume boils?

There is a section in several homebrew books about sanitary tenchique, and maybe you're missing something. Is the bottling bucket scratched? Is the plastic valve at the bottom old or dirty? They're hard to clean..

TD

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