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Old 12-29-2012, 04:07 AM   #1
Dec 2012
Posts: 50
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Just bottled my first batch today and plan on brewing my second tomorrow. My question is how long should i run a fish tank pump in my one gallon fermentation jug? Ive got a stainless steel diffuser and a .5 micron filter. Ive read that 15-20 minutes is enough but didnt know if the time was different for a one gallon batch.

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Old 12-29-2012, 04:38 AM   #2
IffyG's Avatar
Oct 2009
Posts: 1,393
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I wouldn't even bother using the aquarium pump. Sanitize a small piece of plastic wrap, cover up the hole and shake that SOB for a minute or two. Works perfectly for me.

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Old 12-29-2012, 04:41 AM   #3
Apr 2012
Charlottesville, Va
Posts: 706
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With normal air it is nearly to totally impossible to over aerate. For my 1.5 gal batches I aerate for 10-15 minutes while I am cleaning up. My 3-5 gal batches I clean up and eat so maybe 30 minutes.
Suburban Farmhouse Brewery

Primary: Home Hops 15 IPA
Bottled: Huis Koyt, Summer In Sommelsdijk, Trekker Huis ( Tractor House) Saison
Up coming beers: Higgs Special with Homegrown hops

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Old 12-29-2012, 05:30 AM   #4
TheBeerist's Avatar
Nov 2010
Seattle, WA
Posts: 257
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Originally Posted by IffyG View Post
I wouldn't even bother using the aquarium pump. Sanitize a small piece of plastic wrap, cover up the hole and shake that SOB for a minute or two. Works perfectly for me.
I agree with this, as long as you're not brewing high gravity beers. Cap it, shake it, call it a day.

While yes, it's probably impossible to over aerate with a stone, I would worry that the longer you pump air into your wort, the more chance you have of pumping something bad in and getting a secondary infection. The risks (and the hassle) far outweigh the benefits.

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Old 12-29-2012, 03:37 PM   #5
Oct 2012
Chicago, Il
Posts: 817
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to aerate one gallon of wort, simply shake the snot out of the carboy before you put the yeast in.

any more than that is a waste of effort.

i brew exclusively one gallon batches, in carboys, and what i do is pour about half the wort into the carboy, and shake the stuffing out of it for a couple minutes, then pour the rest in and repeat.

then i pitch the yeast, and give it a couple gentle shakes to get mixed properly, put in the blow-off, and wait about 4 - 5 hours for the fun to start.
'Tis himself

In the fermenters: nada

In the bottle: nada

In the fridge(and the glass): nada

On Deck: anything i can think of

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