As far as I can tell no new leaves have been affected. Some of the previously affected leaves got a little worse but I think that has ceased. I actually decided to give them a feeding (1tsp TB per gallon) and it seems like they really needed it. I was so worked up about not over feeding them that I didn't feed them enough. This is also the first grow where I didn't use molasses and I get a cal-mag deficiency, so I will definitely going to be using it in the future.