Originally Posted By: Stephen L
So, everything seemed to be dying off. Then yesterday there was a good rain and this morning it seems like everything is green again. Can it come back that quick? It was so close to being gone.
You may be getting reinfested. I have lakes and ponds that get fresh watermeal and duckweed every rain or when the wind blows it from the swamps. I have only had one failure (actually partial control) with Flumioxazin so check your inflows. When we did the first trials on Clipper for watermeal we hit 200ppb everytime and always had success. If you are treating a portion of your pond it is possible it floated away from the treatment zone overnight. Clipper is a cell membrane disruptor(PPO Inhibitor) which means you need to get the product close. Fluridone will travel in the pond and by the next day you should have the same concentration shore to shore. Flumioxazin will move some but proper application is important. We don't even use Fluridone on watermeal anymore. Too difficult to control.