My experience parallels ML's. I fertilized 2 years in a row and had 2 DO crashes. Haven't had a crash since I quit trying to get 10 pounds of fish in a 5 pound bag.

However, others have reported successfully using fertilization to kill water weeds. I've had darn good luck with Grass Carp on all vegetation.

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 Grandpa