Rusty, I called Scotts and they could only tell me that the soil is pH'd to a range of 5.5-7.5. I'll pH-UP my nutrient solution slightly and use Miracle Grow as you suggested.

I should add that the problem has progressed throughout the entire plant (all nodes). New growth is lighter green. I'm going to continue using the Epsom/dish soap foliar spray daily on affected leaves. Liquid Karma is arriving tomorrow; I'm going to see if that will help too.

Shake, I promise to get those pics up ASAP. Do you have any suggestions in the meantime?

All of your help is appreciated, thank you!
-purp
purpleskunk777 Reviewed by purpleskunk777 on . Possible Magnesium Deficiency? My 2-3 month old clones are experiencing yellowing of new growth. The yellowing is localized on the perimeter of the leaf, leaving an arrowhead-shaped darker, healthier green in the center of the leaf. Researching google, I diagnosed this as a magnesium deficiency (whether I was right or wrong) and followed the directions posted under the sticky "epsom salts = not miracle cure)," spraying the leaves (yesterday and today). The condition seems to have become worse since applying epsom salts. My Rating: 5