Dupla CO2 Set Omega

[Dgrim62 at cs_com]

Hi everyone,
Just saw this advertised on the Dupla Ad on the inside cover of the July 2002 
FAMA, "..which is based on the principle of yeast fermentation.."  The 
product box indicates a fermentation container with an airline coming from it 
going to something I cannot quite recognize, maybe a diffusion disk.

I wonder how much this costs because it comes from Dupla?

My cost: 

Empty 2 liter Coke bottle:  free
Airline tubing                    fifty cents (?)
dab of silicone                  five cents (?)   
yeast & sugar                   two dollars (?)
airstone                            fifty cents (?)
About $3.00 total

I don't use DIY yeast CO2 injection any more, but would hate to see anyone 
pay a lot to try this method.
Dave


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