All jokes aside, this is good to know... the pond I've built has attracted a couple of frogs, and I want to make sure I keep well clear of them if I'm going to use Roundup as aggressive weed control.
That's good to hear. Monsanto makes a similar product to Roundup, that is supposedly safe to use in wetlands, Rodeo. It's works just as well. So if the weeds get out of control near the shoreline, you may want to switch to Rodeo.
I have a friend whose pond (a big one!)had all the fish die. Twice. They later found out that it was from something the neighbor put on their grass.