but my Bonsai is changing colour on its leafs
. I have had it only a week and I'm a little worried about its appearance. The leaf have changed colour from a plush green to a yellow/brown and some have started to fall off 
The tree is situated in my front room in the window on the window ledge, I have been watering it with rain water because the water is treated here and it doesnt even tastse that nice .The soil is a med/moist to content and even though I havent watered it every day I have made sure its been kept at this level of hydration. Is the tree reacting to a change in enviroment or is it starting to die on me "HELP"Best Regards Mark