Making a barleywine, will this fish tank air pump work for aeration? - Home Brew Forums
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Old 07-23-2010, 11:51 PM   #1
HalfPint
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http://www.walmart.com/ip/Aqua-Cultu...-1-ct/10532632

I've had that one for a couple of years, and it still works well. I know I need a stone to diffuse the air, but should I just use the regular old hoses that come with these things? Also, what about an air filter? For a typical barley wine, should I aerate for around an hour or so?

Thanks,
J



 
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Old 07-24-2010, 12:09 AM   #2
patrck17
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The pump is fine. Use it and you'll be cringing down barleywine in no time! As for the duration of aeration... really depends on how big of a starter your using, in my opinion, the larger the better, and in the case of how long to aerate, the longer the better. You won't mess it up.


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Old 07-24-2010, 12:20 AM   #3
Gregscsu
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Defineatly use a sanitary filter, food safe tubing, and a stainless steel aireation stone.
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Old 07-24-2010, 02:09 PM   #4
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Great stuff guys. Thanks a lot for all of the info.

Also, I usually make starters with my washed yeast, but how big of one do you think I'd need? Do you think a 2L starter will be big enough, or should I step a 2L starter up with another 2L? I know a lot of guys rack right on top of yeast cakes, but I don't know if I'll have a neutral ale yeast cake ready considering I'm brewing saisions and wit's right now. The other option for pitching is a couple of packets of nottingham.

Thoughts?

 
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Old 07-24-2010, 04:33 PM   #5
a10t2
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I really like to use disposable plastic airstones. For about 50 cents apiece, I just use them for one starter/brewing cycle and throw them away after each brewday.

Starter size will depend on how much yeast you're using and the gravity of the beer. Try to estimate your cell count by assuming 3.5 billion/mL and 25% viability loss per month (in the fridge):

cells = 3.5*V*.75^t where t is the age in months.

Then plug that number into the viability field of the MrMalty calculator, set it to "stir plate" (assuming you'll be using the pump to aerate the starter) and it will tell you how big a starter you need.
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Old 07-25-2010, 12:44 AM   #6
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Quote:
Originally Posted by a10t2 View Post
I really like to use disposable plastic airstones. For about 50 cents apiece, I just use them for one starter/brewing cycle and throw them away after each brewday.

Starter size will depend on how much yeast you're using and the gravity of the beer. Try to estimate your cell count by assuming 3.5 billion/mL and 25% viability loss per month (in the fridge):

cells = 3.5*V*.75^t where t is the age in months.

Then plug that number into the viability field of the MrMalty calculator, set it to "stir plate" (assuming you'll be using the pump to aerate the starter) and it will tell you how big a starter you need.
Cool, thanks for the formula. Do you get a lot of foam using those air stones?

 
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Old 07-25-2010, 04:59 AM   #7
a10t2
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Quote:
Originally Posted by HalfPint View Post
Cool, thanks for the formula. Do you get a lot of foam using those air stones?
I usually aerate 5.5 gallons in the 7 gallon "ale pail" fermenters. Doing that it takes 10-15 minutes before the foam actually touches the lid. That should be about how long it takes to get the wort saturated with air anyway, so at that point I call it a day and pitch the yeast.
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Old 07-25-2010, 03:46 PM   #8
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Quote:
Originally Posted by a10t2 View Post
I usually aerate 5.5 gallons in the 7 gallon "ale pail" fermenters. Doing that it takes 10-15 minutes before the foam actually touches the lid. That should be about how long it takes to get the wort saturated with air anyway, so at that point I call it a day and pitch the yeast.
See, I'm just trying to save a bit of money by not having to buy those stainless steel ones from the LHBS. Also, do you use food grade tubing?

 
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Old 07-25-2010, 04:13 PM   #9
mullenite
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Quote:
Originally Posted by HalfPint View Post
See, I'm just trying to save a bit of money by not having to buy those stainless steel ones from the LHBS. Also, do you use food grade tubing?
Most tubing is food grade, I buy all my tubing from Home Depot and they have a chart saying what temperatures each type is NSF approved for.



 
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