oh crap!
thanks Rainman, what would u suggest to kill algae and duckweed that do not harm fish? I will be growing fish to eat later. I also have a well directly below the pond which supplies my house with water, so cant get that contaminated.
This stuff appeared to be biologically neutral so thought it was safe. Sounds like it is, but just doesnt work. I dont have aeration yet. I do have 2 fountains that shoot water 10 feet in the air, so the surface gets aerated. I run it about 4 hours a day with a Shimwaya ~5700 gph pump
