CO2 Enrichment

[OzPhal]

Hi everybody,

I've read a range of articles about methods people have employed to accelerate growth rates of orchids through CO2 enrichment... I'm a microbiologist and during the course of my work i regularly culture anaerobic organisms - these organisms grow in the presence of high concentrations of CO2. One of the products that I use for this process are little CO2 generating sachets... they're rated for a 2.5L vessel and deliver a final CO2 concentration of approximately 6% CO2 and a final O2 concentration of approximately 15%. What are peoples thoughts on giving these a go for orchid growth? Obviously unless the vessel is completely sealed the CO2 concentration would decrease over time but it would give them a higher concentration than they would otherwise receive under normal conditions. I thought one of these thrown in a covered propagating tray would be an interesting experiment... any thoughts?