Thanks for the reply,

I discussed the algea treatment today with my neighbor and he said that he had spot treated applying a total of 3 gals over a couple of days (app rate is 2.5 gals per acre) so it does appear that the treatment was not the problem.

The pond was fertilized this spring and there was no resulting bloom, I determined that we needed to lime the pond so no more fert. was applied.

There is no livestock in the area, betwen myself and my neighbor we throw about a gallon of feed per day, not much. There is no wading and pooping may be an issue because there is a lot of life in the pond.

The pond has tons of ditch minnows, thousands of tadpoles and even somehow (there is a river next to the pond) got mud cats in the pond which spawned in the spring.

We definately misread the algea bloom,we have a red film (algea) in a corner of the pond.