Hey Squarepusher I'm hoping you can help me out, I'm trying to find a post that Fatman made on a thread to cite that you were involved in, perhaps on another fourum. im thinking 2008? Gas exchange, Low RH, High temps, co2 and how the plant will push a water drop up through the leaf when RH is to high. Does the water droplet ring a bell? any help would be appreciated. thx