I have never seen or heard of that. Whitecap stays in the water column longer than some other herbicides; they say up to 30 days. I thought it would prevent the re-emergence. I guess it doesn't matter as long as it kept on working. That stuff is pretty expensive.

It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.

Without a sense of urgency, Nothing ever gets done.

Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP