Ok I stand corrected on the duckweed and learned something. Since Duckweed thrives in ponds with high levels of phosphorus and nitrogen, it would be safe to assume the surrounding pasture being fertilized with chicken manure and the resulting run-off from rainwater leaching is providing the pond with too many nutrients that make the duckweed flourish. If it is so hard to kill off completely it might be best to focus on a control and stock some fish that eat it and so create a balance. Crayfish love duckweed both dead and alive. One can actually watch them swim up to the top flipping their tail wildly and grabbing some on the way down. There are likely other fish that eat it as well like Talapia that might be stocked if the temperature is adequate.

ETA...Ah I see SkinMan is in LA. Going to be very hard to do away with it as mentioned in one of the other threads due to the birds carrying it in from all over the place. Talapia do well in Southern ponds if the water temperature does not go below 55. They'll get fat and happy on it \:\)

Last edited by CharlieLittle; 04/15/08 05:51 AM.