Yeah we do fungal cultures at work. They can take a week to 10 days so it sucks having to make people wait that long to know what is wrong!! It would be good if it was fungal though...definitely an easier fix than a lot of other problems.Ugh. I'm STILL waiting on the results. If it's fungal at least I can treat it and then it will go away. I don't think it's lawn chemicals because nobody gives a crap about their lawn in this place.