Larry:

Do you mean Karmex? If so, can you post a picture of the label (or link to a published label) where it says it can be used in ponds?

I was under the impression that it wasn't labeled for use in water (i.e. ponds).

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).