What does it do for those of us breathing challenged types? :) > A common used "CO2 generator" these days in greenhouses is a propane > burning unit. It was not meant to heat the house but produce CO2 as a > product for increased plant growth and vigor. --------------- See http://www.aka.org/AKA/subkillietalk.html to unsubscribe Join the AKA at http://www.aka.org/AKA/Applic.htm