Since the entire 35 acre watershed is on my property and I use very little or no herbacides, etc or any thing else that could be harmful, I'm doubtful that any thing got into the pond. Plus with the bloom kill, it appears to be a classic case of turnover from my lay perspective.

Got over 5" of rain yesterday and last night and I'm heading to check pond. Hopefully it wasn't an acidic rain low in DO.