I had a strange fish kill. I blamed it on cold rain, and partial turnover.I remembered smelling something that resembled 2,4,d. First my BG died, then my YP, Now my WE are showing up. The water got strangely clear for a turnover.Actually very clear. I'll bet my visibility got to 10 feet.I could stand at the edge, and peer into the water and see the vegetative growth of the pond in the shallower water probably 50 feet out when the sun was right.I have 2 water samples in jars,and looks like tap water.
I inquired, and the wheat on this farm got sprayed for Aphids. Seems Lorsban was used.A rain within 12 hours came on. From what I read, Lorsban is highly toxic to fish. After posting, I researched more, and it's also highly toxic at concentrations of less than 1 ppb to freshwater algae.
Lorsban is "chlorpyrifos". Which would, if my small knowledge of chemistry is accurate, that it kills fish due to being an attacker of the central nervous system, it would also be like pouring chlorine into a murky swimming pool, with a phosphorous base that would increase uptake by vegetative material.
So my kill in my pond was not due to a "turnover" and the remedy an aerator.Or due to my pond being eutrophic.
It was killed off due to frickin Lorsban.
This pond has dealt with MUCH bigger climate changes than what I had a week or so ago.
@ Habitpro My brother and I are the sons of a cropduster.My brother watches his crops very closely. Probably to a fault at times. At the signs of insect infestation, the phones being dialed. Growing up, most generally, most farmers never wanted to spray til the damage was done.Sure bugs would be killed, but the only ones benifitting financially, was the chemical companies and my pappy.This time the fish guys!
It was a very interesting life to say the least.
I remember now, dad never using Lorsban, due to its toxicity to fish, and its resilience.
I'm glad I finally figured out what it was. Now I can breath deep, and take a pill.
