O2 in a starter

[overdbus]

Can to much pure O2 in a starter make the yeast unhappy ?
I fear i may have over done it last night on a 2 qt starter
with the o2 (first time with o2 tank ok) ?

 

[steber]

I don't think its possible to introduce too much O2. You'll reach a saturation point. What was your method? Did you defuse the O2 at all? If you didn't, you probably didn't put as much o2 as you thought you did in there.

 

[overdbus]

splintered stanless steel thingy i got from morebeer ,it foamed up the wort real nice ,this is a 20 cubic ft tank with a welding regulator from harbor freght.

 

[helibrewer]

You only need to hit at 2L starter for about 10 sec. on 1L flow.

 

[Golddiggie]

I use the O2 tank for my beers, and use a stirplate for my starters. With the stirplate working with atmospheric oxygen, the most I'll get is 8ppm.

 

[theveganbrewer]

I think it is possible to stress yeast out with too much o2 but its complex and probably not a threat at home.