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Old 04-22-2007, 04:14 PM   #1
GeauxBrew
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Default Methods of aeration

We've all heard the pros & cons of all the areation methods, pure O2, agitation, aqurium pump, ect. And some say too much pure O2 may not be good. The question I have is enriched O2. What I am refering to is forced areation with a difuser stone with say 32% O2. I am a scuba diver and have access to enriched air that divers use in their air cylinders to increase bottom time in the water and to decrease the risk of getting the bends. Any thoughts?

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Old 04-22-2007, 04:45 PM   #2
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I use pure O2 with my aeration stone and it works perfectly and I've had really great fermentations since I started using it.

Don't know about your question though.

Dan

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Old 04-22-2007, 04:50 PM   #3
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How lond do you usually run the pure O2?

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Old 04-22-2007, 05:18 PM   #4
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Since 32% isn't much different from the 21% in free air, there won't be any real advantage to using it. But, 10 minutes would do it.

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Old 04-22-2007, 05:25 PM   #5
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Quote:
Originally Posted by GeauxBrew
How lond do you usually run the pure O2?
It's normally on for about 60-90 seconds before the foam blows out the top of the carboy.


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Old 04-22-2007, 08:12 PM   #6
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I run my O2 for 2-3 minutes, but slow enough so the bubble barely break the surface. Besides the slight O2 increase of nitrox, you're at the very least injecting clean nitrogen along with it. Those who do the slosh, shake, or other room air injecting methods are somewhat risking an infection. How are you adapting your scuba reg to get it into air tubing? I'd run it slowly for about 15-20 minutes.

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Old 04-22-2007, 09:34 PM   #7
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I haven't tried to figure how addapt the scuba reg yet, it was just an idea I had.

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Old 04-22-2007, 09:51 PM   #8
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I run my decompression bottle for aeration (100% O2). I put on the reg, use a wrench to remove the first stage from the LP Reg hose then fit a bit of clean tubbing over the end of the LP Hose. Stick the tube into the beer and just crack the valve open. The other end of the hose is pinched shut and perforated, sort of like a homemade aeration stone.

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Old 04-22-2007, 09:54 PM   #9
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Quote:
Originally Posted by JimC
I run my decompression bottle for aeration (100% O2). I put on the reg, use a wrench to remove the first stage from the LP Reg hose then fit a bit of clean tubbing over the end of the LP Hose. Stick the tube into the beer and just crack the valve open. The other end of the hose is pinched shut and perforated, sort of like a homemade aeration stone.
Just the end of the hose or do you use a stone?
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Old 04-22-2007, 10:03 PM   #10
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Just the end of the hose. I am cranking out way to much pressure (130psi or so) for a real stone and my jury-rigged regulator/tubbing connection. Even with the valve just cracked I think I would blow everything apart if I put a real stone on it. But it seems to work, my fermentations got a lot more vigorous since I started doing it.

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