Quick Question About Diy Yeast Co2

[coolie]

With a DIY yeast setup, has anyone done any study on how necessary it is to hold the co2 suspended in the water
(in those upturned type containers). It's just that I'm thinking CO2 is heavier than air and should just hover
about on the surface. Which is why, I guess rivers and lakes in the wild pick up a lot of CO2, because they are in low places.

I guess if you could see it, it would be like dry ice (which is cold CO2) hovering about the water surface.

 

[Ps3Steveo]

Best thing to use with yeast is the Hagen ladder, it's very effective but collects debris.

 

[coolie]

Thanks for your tip. The other part of my query is really about how the gas that has escaped the water, possibly sits just above it. (it's my theory)

When I was on the home brew forums, a lot of the large scale brewers, install ventilation in their cellars because the CO2 being heavy sinks down there.

 

[SO19Firearms]

Thanks for your tip. The other part of my query is really about how the gas that has escaped the water, possibly sits just above it. (it's my theory)

When I was on the home brew forums, a lot of the large scale brewers, install ventilation in their cellars because the CO2 being heavy sinks down there.

I definitely don't know the mechanics but it doesn't work like that. You'd have to seal the top which would result in dead fish. If you don't seal it the co2 won't simply sit on the surface - we know this to be the case because most co2 tanks have fish that are alive. It will be stuff like the temperature of the water etc creating currents - Like the air around us not layering up so much

Ultimately tho - would have to be sealed = no gas exchange = problems overall.

IMO

 

[coolie]

Yes, agreed there are eddies and currents and just because a gas is heavier, it doesn't form exact layers, but I'm talking about a tendancy to sink down like dry ice does.
Maybe I'm barking up the wrong tree, but maybe the reason that river and lake plants grow so lush is that lakes and rivers are all in the lowest areas in any given terrain. Get my drift?

 

[SO19Firearms]

Hearing you m8 - But if that was actually the case you'd get this CO2 barrier - which doesn't happen. IMO

EDIT: 'cos if it did - you'd lose gas exchange meaning dead wildlife...

 

[coolie]

OK, I've got a feeling now that my dry ice analogy is incorrect. It seems dry ice hugs the ground for some other reason.
This web site explains it is because co2 is heavy - I think they are wrong too: http/dryicenetwork.com/dry-ice-info/dry-ice-fog/
This web site explains why co2 doesn't form low lying layers: http/colinb-sciencebuzz.blogspot.co.uk/2010/01/if-co2-is-so-heavy-why-doesnt-it-sink.html
It may be that CO2 in the form of dry ice drops to the ground due short term behaviour (mentioned on science buzz web site) called a bulk phase effect.