hi folks, i'm new to the CH list (first post) and sure am enjoying reading about our favourite foods! <<<I'll find out specifics later but a friend of mine mixed up a yeast concoction in a big bucket; the top is sealed except for a hose from the bucket top that protrudes down to where the plants live. It gives off some magic-voodoo air that green things love.>>> any chance that the magic stuff is CO2 ? carbon dioxide ? don't plants use that in photosynthesis? sure hope he's getting those yeasts to work on something useful .... like chili beer! regards peter g