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Old 02-12-2013, 12:22 AM   #11
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Originally Posted by mcnewcp

I'm not sure what you mean by two piece, do you mean the s-shaped ones?

If it gurgles backwards though, wouldn't it just be pulling in air, meaning more oxygen and a higher chance for contamination? The waterless silicone ones will actually hold a suction if they start to pull backwards.
If it gurggles back, yes it is bringing in air, but it's passing through sanitizer.
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Old 02-12-2013, 12:45 AM   #12
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Dont know if this helps, but i have started lowering the level of my vodka in my airlocks when i cold crash. It will suck in but wont add vodka or sanitized water in. About half way to the line works, for me at least.

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Old 02-12-2013, 05:28 AM   #13
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S-shaped (two-piece) will not suck sanitizer back into the carboy.
Cup-type (three-piece) will.
Air sucked into the carboy is of no consequence since the carbon dioxide is heavier, and forms a protective gas layer over the beer.

S-shape for beer, cup shape for wine.

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Old 02-12-2013, 06:26 AM   #14
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Originally Posted by acidrain View Post
S-shaped (two-piece) will not suck sanitizer back into the carboy.
Cup-type (three-piece) will.
Air sucked into the carboy is of no consequence since the carbon dioxide is heavier, and forms a protective gas layer over the beer.

S-shape for beer, cup shape for wine.
The gases WILL mix but their will be very little oxygen introduced this way. I don't know how much oxygen and how much time is required to oxidize beer because I haven't had it happen yet. Some people with more refined palates than mine may be able to pick something up. I cannot. This is one of those 'magic bullet' devices as far as I'm concerned. It plays more on our desire to perfect every last little detail more than it solves an actual problem.
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Old 02-12-2013, 12:47 PM   #15
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If it's sucking sanitizer back into the fermenter, you're doing it wrong. I've never seen that happen.

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Old 02-12-2013, 01:23 PM   #16
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I'm regards to the waterless airlocks...


I have 3 and love 'em...totally worth it! No evaporation...worrying about liquid getting sucked into the beer. Easy to clean...totally recommend them

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Old 02-12-2013, 04:03 PM   #17
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If it's sucking sanitizer back into the fermenter, you're doing it wrong. I've never seen that happen.
Or you are cold crashing.

I have also seen my buddies s-shape airlock suck back when cold crashing as well. So it can happen.

like i said, i lower my level of vodka and haven't had an issue since that first cold crash. I'm sure there are several work arounds, but i'm working with what i have.

I am considering a couple of these silicone ones though
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Old 02-12-2013, 04:06 PM   #18
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Or you are cold crashing.

I have also seen my buddies s-shape airlock suck back when cold crashing as well. So it can happen.
It will only happen if the airlock is overfilled. If filled properly suck back will not happen.
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Old 02-12-2013, 04:39 PM   #19
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It will only happen if the airlock is overfilled. If filled properly suck back will not happen.
If i have it filled to the line it will suck in when cold crashing. It's not much, and won't ruin the beer. That it's the level at which you are suppose to fill it correct?

if i remove half, which i now do i have no problems when i cold crash.

I have always been told to fill these to the line, but please enlighten me if that is wrong. I'm always up to learn something new.
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Old 02-12-2013, 04:52 PM   #20
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Quote:
Originally Posted by Dolomieu View Post
I have always been told to fill these to the line, but please enlighten me if that is wrong. I'm always up to learn something new.
Filled to the line will allow suck back, so it can't be correct.
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