Welcome FRiend.
Air -- more specifically, Carbon Dioxide in the Air:
"In the Calvin cycle, atmospheric carbon dioxide is incorporated into already existing organic carbon compounds, such as ribulose bisphosphate (RuBP).[5] Using the ATP and NADPH produced by the light-dependent reactions, the resulting compounds are then reduced into triose phosphate. Of every six triose phosphate molecules produced, one is removed to form further carbohydrates and five are "recycled" back into the cycle to regenerate the original carbon dioxide acceptor, RuBP...."
http://en.wikipedia.org/wiki/Photosynthesis
KEWL! Thanks for the graphic explanation! That works even inside? We don’t have any grow lights on it or anything.
BTW, it’s now 2 1/2 inches tall!
LOL! Darlin just up-ended it to look, and IT IS STARTING TO SHOW TINY ROOTLETS!!!
(Happy Dance!)