some clones i got are now in the 12/12 phase i got them from someone who was probably adding nutrients, and it should be noted that i have only been watering with just water. anyways somne of the very bottom leaves have gotten so dry and yellow that they fall off.. this cant be good?? any advice? also i read on a few other sites that since they jsut started flowering that a plant will drop the leaves that are not producing buds. i just looked at my plants and the leaves that are starting to yellow on my healthiest plant are all leave with no nodes on them. the other plant is also dropping leaves with no nodes. is it just a natural process? some are so dry and dead that they powder when you pluck them.