CO2 vs H2O In Cannabis Cultivation with Melyssia Santiago from CO2Meter.com. Melyssia is the Vice President of Sales at CO2Meter, she has been a key force in helping CO2Meter drive sales and exceed industry expectations, since 2015. While driving the sales growth for the organization, Melyssia has also been committed to team mentoring, providing the ultimate customer experience, and exceeding sales expectations year over year. Her dedicated advocacy for CO2 safety in restaurant and beverage industries has expanded into the cannabis cultivation and extractions facilities worldwide have earned her a reputation as a leading professional and source for gas measurement solutions in the agriculture space. One thing we enjoy about the cannabis industry is there’s more and more science being integrated into our systems and infinitely more to learn.