RE: [compost_tea] Flow rate for air pumps

From: Tom Jaszewski <tom_at_livesoil.com>
Date: Thu, 17 Feb 2005 17:54:45 -0800

6 mg/liter is the magical number with no data to confirm that I have found.
Interesting that a number of brewer builders admitted their systems went t=
o
1-2 mg/liter briefly until Dr. E said that was not acceptable. Ever since
they NEVER drop below 6..

 

My best test results with SFI for fungal content ALL dropped at specific
points in the brew to "unacceptable" levels.

 

 Once again more data is needed...

-----Original Message-----
From: Steve Diver [mailto:steved_at_ncat.org]
Sent: Thursday, February 17, 2005 2:11 PM
To: compost_tea_at_yahoogroups.com
Subject: [compost_tea] Flow rate for air pumps

 


I've received several inquires lately on
suggested air pump flow rates per volume
of water.

While 6% dissolved oxygen is the established
parameter to monitor oxygen level during
the tea brewing process, what are the guidelines
for matching flow rate of air pumps to tank
volume to achieve this optimum aeration level?

For example, how do you match air pumps (measured
in CFMs - cubic feet per minute?) for 50-gal,
100-gal, 500-gal, and 1000-gal volume tanks?

Are there particular brands or suppliers
of air pumps known to be especially useful
in compost tea brewing?

Thanks,

Steve Diver






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Received on Thu Feb 17 2005 - 21:36:30 EST

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