May I Aerate AFTER Pouring Yeast into the Carboy?

I extract brew, and the kits I buy from NB tell me to add cold water to the wort to get a total of 5 gallons, and then aerate before adding the yeast.

However, if I do this I will always have more than 5 gallons of total solvent after pouring the yeast in, unless I try to add an amount of water less to the carboy equal to the volume of the yeast.

It would be easier for me to put the yeast in and then top off with cold water until 5 gallons, and then aerate (I use an aeration stone).

Is this OK?

Topic extract-brewing aeration yeast-starters extract yeast homebrew

Category Mac

1
answered at

It does not need to be 5.00000 gallons, don't worry about the small differences.

You can aerate after pitching the yeast, so long as it's immediately after; the yeast need oxygen during the lag phase, but once alcohol starts being produced, you don't want to introduce oxygen at that point.

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