Re: [compost_tea] Re: Air Required was: Air pump selection & 5 gal brewer
Stuart - That's why we pay people to design machines. Put all the info on =
one page, read it over, then go buy a pump. It'll probably work fine.
Dave
----- Original Message -----
From: Stuart Baxter
To: compost_tea_at_yahoogroups.com
Sent: Friday, October 03, 2003 11:30 AM
Subject: Re: [compost_tea] Re: Air Required was: Air pump selection & 5 g=
al brewer
Can we keep this thread going........I'm thoroughly confused about oxygen=
ation now!
What with shear, simple aquarium air pumps vs. $500+ 1/3 HP blowers, and =
big bubbles vs. small bubbles, and shallow tanks vs. deep ones.......arrggg=
h. What do I need? Does anyone have any definitive answers that will stand =
up to scrutiny or are these opinions? (bearing also in mind that air = 21=
% oxygen, 70+% nitrogen......)
# I'm forever blowing bubbles, pretty bubbles in the air.............# =
:o}
Stuart
----- Original Message -----
From: johnz4wi
To: compost_tea_at_yahoogroups.com
Sent: Friday, October 03, 2003 2:41 PM
Subject: [compost_tea] Re: Air Required was: Air pump selection & 5 gal=
brewer
There are different kinds of diffusers. www.aquaticeco.com has a
good selection. From coarse to ultra-fine bubble size. I got the
medium bubble stones for my home made brewer.
John
--- In compost_tea_at_yahoogroups.com, soilfoodweb_at_a... wrote:
> As bubbles rise through the liquid, we see fungal strands caught in
the
> interface between the small bubbles rising at different rates
through the through
> the liquid.
> A factor of surface tension? But as the small bubbles move, the
fungal
> strands caught in the interplay of the tiny bubbles are shattered
and ripped apart.
>
>
> I think this is critical when some micrometer size bubbles are
suspended
> basically un-moving in the water, while slightly larger bubbles
move past the
> smaller size bubbles.
>
> I report what I observe. Not being a physicist, I am not certain
what
> physical phenomenon this represents, but fungal strands don't do
well in liquids
> with very small diameter bubbles. Another reason that carbonation
works so well
> to suppress fungal growth?
>
> Elaine Ingham
> President, Soil Foodweb Inc.
> www.soilfoodweb.com
> SFI Oregon, USA
> SFI Australia
> SFI New York
> SFI Europe
> SFI New Zealand
>
> "Hope is not a feeling. It is not the belief that things will turn
out well,
> but the conviction that what we are doing makes sense, no matter
how things
> turn out." -- Vaclav Havel, former President of the Czech
Republic
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Received on Sat Oct 04 2003 - 12:21:10 EDT
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: Tue Feb 07 2012 - 14:14:48 EST