Aeration?

[duboman]

Sanitizer wasn't brought up at all when I picked up my kit. I just assumed it was in the kit. Lesson learned I guess. Cheers!

Next time you are in there you should mention it
to them as it is really one of the most important things to learn about in the brewing process

 

[cheesehed007]

Next time you are in there you should mention it
to them as it is really one of the most important things to learn about in the brewing process

My thoughts exactly, plan on stopping by Thurs or Fri.. Thanks! Cheers

 

[tnsen]

OK...a couple quick questions about the topic aeration...apologies to 99 as I dont meant to hijack your thread..but as long as were talking aeration, would I need one of those in line sanitary filters if I had a disposable benzomatic c20 bottles? (red)...also my wife has a long lost hobby of making jewlery from old wine bottles...so we have in our garage an old co2 machine...I think its called millinum respor something ..it looks like a small air conditioner but it takes c02 from the air and condenses it ( I think)...she was using it for a torch (c02 and propane )to melt glass, it was refurbished so it says right on it "not for medical use hobby only "...could I use this to put pure co2 in wort... ok that was probobly a stupid question ..but would I have to filter that with one of those sanitary in line filters as well?...(20 minutes with an aquarium pump is just too long)....Tom

 

[duboman]

OK...a couple quick questions about the topic aeration...apologies to 99 as I dont meant to hijack your thread..but as long as were talking aeration, would I need one of those in line sanitary filters if I had a disposable benzomatic c20 bottles? (red)...also my wife has a long lost hobby of making jewlery from old wine bottles...so we have in our garage an old co2 machine...I think its called millinum respor something ..it looks like a small air conditioner but it takes c02 from the air and condenses it ( I think)...she was using it for a torch (c02 and propane )to melt glass, it was refurbished so it says right on it "not for medical use hobby only "...could I use this to put pure co2 in wort... ok that was probobly a stupid question ..but would I have to filter that with one of those sanitary in line filters as well?...(20 minutes with an aquarium pump is just too long)....Tom

You do not want to inject CO2, that's a byproduct of fermentation, you want to infuse the wort with O2 as that's what yeast requires to grow and multiply during the first phase or lag time. More O2reduces lag time but it can also be over done.

Yes you can use an aquarium pump with a sinter stone, about 5 minutes as you fill the primary, IMO

 

[jungatheart]

What about one of those stick blenders. I have one that, I think, must be turbocharged. Do Y'all think it would work well?

 

[mb82]

What about one of those stick blenders. I have one that, I think, must be turbocharged. Do Y'all think it would work well?

Get one sanitize would be near impossible I think. Clean yes, sanitized no.

 

[W0rthog]

The way I understand it, for most Ales that are low to medium gravity, shaking or stir should be sufficient. However for high gravity beers, you need more oxygen. About twice the oxygen to what shaking can produce. So I invested in a stone, hose and o2 bottle. If you ever do high gravity beers, I think it's a good investment. Since you can't really over oxygenate the wort it can come in handy for starters, yeast farming etc.
My 2 cents

 

[jeepinjeepin]

The way I understand it, for most Ales that are low to medium gravity, shaking or stir should be sufficient. However for high gravity beers, you need more oxygen. About twice the oxygen to what shaking can produce. So I invested in a stone, hose and o2 bottle. If you ever do high gravity beers, I think it's a good investment. Since you can't really over oxygenate the wort it can come in handy for starters, yeast farming etc.
My 2 cents

You can over oxygenate with bottled O2. You cannot with an air pump.

 

[W0rthog]

You can over oxygenate with bottled O2. You cannot with an air pump.

If known, please indicate how many ppm it would take to over oxygenate wort.

 

[jeepinjeepin]

If known, please indicate how many ppm it would take to over oxygenate wort.

Many claim 8-10ppm being the "best" amount of dissolved O2. The wyeast link below shows 26ppm possible with pure O2. Others claim 30ppm or more is possible. I think someone in the HBT link below claims anything over 20ppm is damaging to the yeast cells.

https://www.homebrewtalk.com/f13/question-about-oxygenating-your-wort-50663/

http://www.wyeastlab.com/hb_oxygenation.cfm

 

[W0rthog]

I was basing my previous comment on this statement found on the link you shared from Wyeast. I am new to brewing and therefore still learning. Your feedback is appreciated.

"Over-oxygenation is generally not a concern as the yeast will use all available oxygen within 3 to 9 hours of pitching and oxygen will come out of solution during that time as well. Under-oxygenation is a much bigger concern."

 

[jeepinjeepin]

I agree with that quote. They are the pros when it comes to yeast. It's the "generally" in the first line and that they recommend 10ppm and show that 26ppm is possible that leads me to believe that more is not always better.

 

[W0rthog]

I found this comment (below) by David_42 in the thread you posted. However, others mentioned that while the yeast may not be affected that their experience shows that it oxygen level may contribute to the flavor of the beer.

""Over-oxygenation" - Let's nip this factoid now.

I asked a couple yeast techs from Wyeast about this last night. They said that you cannot stress the yeast by oxygenating the wort, unless you do it continuously for hours. Fully oxygenating the wort at the beginning of the fermentation is not a problem, unless there was something wrong with your starter & the yeast were stressed before pitching."