On Wed, 6 Aug 2014 16:29:29 +0200, nestork
wrote:

The plant fertilizers that farmers apply to their crops eventually get
carried by the rains into the rivers and streams that run into Lake
Erie. Those fertilizers (primarily phosphorous) end up fertilizing the
growth of algae in the lake and the result is algae plumes that can
poison the drinking water for towns and cities like Toledo.


True. One of the reasons they removed phosphates from laundry
detergents. The sky was falling.

Phosphorous occurs naturally in oceans and costal regions. On dark
nights you can see fish darting through the water and see the glow in
propeller wash.