To this day, I still have no real idea as to what happened. For all I know, they could have sprayed for mosquitos and something drifted in. Ron, I don't know. I took more water samples over to Spokane than I was good for, and nothing tested out of the ordinary???????? Have you got any theories?? There is a thread going on now asking people for concrete absolutes in this hobby, I can't for the life of me figure out how you can look for absolutes when crap like this happens. Aquarookie, sorry for the hijack, I'll crawl back into my snowcave in Montana and let you have your thread back.