Try this thread on Durion (Karmex) and ponds. Not a good idea as any plant that gets water from the pond is at risk. See post about 100-year-old walnut trees 100 yards away absorbing it through their roots any dying.

https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=335208&page=1

Last edited by ewest; 05/16/23 11:19 AM.