Fluridone is a great option, but just be aware that the nutrients that are in the pond will probably be consumed by FA once the other plants are dead. So, you'll be trading a DW problem for FA.

It's all a balancing act that we try to perform to the best of our ability!

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).