Yep, it's the only RUP (Restricted Use Pesticide) for water that I know of.

We apply it but it's a bit of a drive to Georgia! LOL

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).