Question about aerating Wort with air pump and stone

JeffBeck · 09-22-2010, 07:42 PM

After I cool down wort and before I pitch yeast how long should I run an air pump with a line and aeriation stone on it in the wort.

thanks

**Mustangj** · 09-22-2010, 07:43 PM

What's your OG?

JeffBeck · 09-22-2010, 11:03 PM

Doing my boil now,

1st runnings were 1.059

6.25 gal reading was 1.040

OG after boil is supposed to be approx 1.051

**Mustangj** · 09-22-2010, 11:51 PM

I'd go a just a minute on it.

**arturo7** · 09-23-2010, 12:31 AM

Are you making an ale or a lager? What size is your stone?

JeffBeck · 09-23-2010, 12:49 AM

GUINNESS CLONE

Small 1 inch round stone

**samc** · 09-23-2010, 01:00 AM

I've never used pump, but the times I've seen mentioned are usually as long as an hour - don't forget that the atmosphere is not pure O2. It's 1 minute or so with a tank of pure O2 (that's what I use when I aerate) and a stone. Several recent things I've read suggest that shaking is as effective as using the aquarium pump set-up.

JeffBeck · 09-23-2010, 01:17 AM

1 minute or 1 hr?

This is just a fish aquarium pump and stone, no O2.
Pouring back and forth 2 times from boil kettle to fermenter bucket is what I have done in the past. it seem to work but I wanted to better it.

**samc** · 09-23-2010, 10:40 PM

Quote:

Originally Posted by JeffBeck

1 minute or 1 hr?

This is just a fish aquarium pump and stone, no O2.
Pouring back and forth 2 times from boil kettle to fermenter bucket is what I have done in the past. it seem to work but I wanted to better it.

1 minute with a pump gets you dirty stone and line to clean but will do almost nothing for the wort. Your current method is far better.

1 minute is for the pure O2 method.

japhroaig · 09-24-2010, 04:43 PM

I have an aquarium stone, and aerate for 5-10 minutes while I'm cleaning up and putting things away. Works for me.