This has generated some interesting discussion on using CO2 to
stimulate orchid growth.
I am like by the idea of using CO2 to stimulate the growth of my
orchids, but I wonder which is more economical to use Dry Ice or
Fermentation. Dry Ice costs about about $3.00 per week to do it the
way Charles Baker is doing it, but by my calculations it should cost
only about $.50 to $1.00 a week to use fermentation to do the same
thing.
What needs to be determined is what level of CO2 you can get with the
Dry Ice and what level of CO2 you can get with fermentation per cubic
foot of growing space and how much it costs. I have the feeling that
using dry ice you can get a higher CO2 level for a large growing area
like Charles. But for a smaller enclosed area where you might be
growing seedlings, that fermentation would work better, as it is hard
to control the "melting" of a small quantity of dry ice.
Does anyone know of an inexpensive way to monitor your CO2 level. I
found some expensive methods and one less expensive, but also less
accurate method.
I am going to set up a simple three way experiment using CO2 from dry
ice, CO2 from fermentation and no supplemental CO2 to see what effect
it has on my seedling growth. The thing I need is a simple,
inexpensive way to measure CO2 levels in the enclosed areas.
thanks,
Tom Hillson
On Nov 15, 2006, at 8:26 PM, Charles E. Bracker wrote:
On November 15, [EMAIL PROTECTED] asked about the cost of dry ice
in “most areas of the US” (OGD Vol. 8, Issue 386). Our most recent
purchase yesterday (Nov. 14) cost us 86 cents per pound plus sales
tax.
Readers may recall that our 3 pound blocks weighed more than 3
pounds each when I actually weighed them here at home (OGD Vol 8,
Issue 386). But the dealer charged us for the actual amount we
ordered. So even though we actually took home 10 pounds, 10 oz. of
dry ice, we paid for 9 pounds of product as the dealer weighed it.
I hope that provides an answer for one location in the US. We live
in northwest central Indiana. Best regards.
Dr. Charles E. Bracker
[EMAIL PROTECTED]
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_______________________________________________
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