OK Jack sorry to do this to you, but you added in some second and third thoughts. What final instructions do you have? I will likely get the water from one of these filler up stations. I will take my meter and get the lowest ppm count I can and if that doesn't get me low enough then i will just buy some distilled water in a jug. If I use just this water then I will have to add in Cal-mag, but if I mix it half and half then I can avoid Cal-mag. A 50/50 mix will put me at about 100 to 125 which will be fine next week probably. However this week, tonight's water change, I will reduce the water blend further to 25/75 to hopefully get a ppm of about 75 and then add in my oh so dangerous veg ferts to get a final res ppm of about 100 to 125. Next week I will bump the ppm's if all goes well. Does this sound right?

Will I be able to heal the plant leaves at least the yellowing? How long should I wait to see signs of improvement? Will the leaves pick up and the yellow start to fade?