Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Pond Weed Control and Dogs

I have a nice pond on my property that has a lot of coontail and FA. I own two Labrador Retrievers that I train and run in hunt tests and field trials. They are in the water every day and drink it by the gallon. Obviously I can't use a toxic chemical in the pond. Are there any treatments for pond weeds that are safe for my dogs?