Reviving this thread as it looks like I AM going to try to self treat my pond. So for treating some but not all of the pond for curly pond weed, would a granular herbicide be better, or Diquat? I had looked at Diquat and was thinking I could spray it with just a garden type sprayer, but maybe that’s not a good idea? You mentioned needing to inject it into the water.
If granular is best, can you recommend a brand, and what’s the best dispersal method for that?
