<< <<<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.>>> In a message dated 8/28/98 5:17:44 PM Pacific Daylight Time, petergaffney@bc.sympatico.ca writes: <<any chance that the magic stuff is CO2 ? carbon dioxide ? don't plants use that in photosynthesis? >> Most probably. In fact co2 is usually the limiting factor in ps. There have been experiments done that have shown when the amount of co2 is increased in the atmosphere of growing plants, the rate of ps increased, I think up to 5 fold (or was that 2 fold?) In some cases, at least several years ago, certain growers piped co2 into greenhouses to indirectly stimulate growth in their plants. Could be the reason people who talk to their plants, and at the same time breathe on 'em, stimulate their growth. Of course if you've been eating alot of habs, you might just kill 'em. janet.