Yes, that is an awesome link, bookmarked myself. BUT I don't see any picture that looks right for this. I still stand by the RO water as the issue and loss of micronutrients. I had the problem with RO and stopped RO and the problem went away. It was diagnosed as rust fungus by several. It is gone from my garden since I went to straight tap water. That is the ONLY change and that is why I attribute the appearance to the absence of balanced micronutrients in the water.