What is the pH in the water? If your soil is 6.9 and your irrigation water also has a high pH, you may need to lower it a bit. It sounds like you're overfeeding them as well, but if you post a pic, we can tell better.
Pass That Shit Reviewed by Pass That Shit on . Which deficiency is this? My plant has been slowly turning yellow, starting from the lower leaves and working its way up the plant. I thought it might be nitrogen deficiency but then I noticed something else. When the leaf becomes completely yellow, it then begins to change to a different color - a light purple color (not a dark purple), then it dies. So I am guessing a molbdenum or a phosphorus deficiency. Any thoughts? Rating: 5