Fertilizing prior to having a ice snow covered pond is a formula for a fish kill. Too much of any plant growth under ice and snow is not good and very risky.
That is what I thought, but wanted to make sure!
Thanks for coming back to clarify the dangers in some of my hare-brained schemes.
(If Wiley Coyote had access to Pond Boss, he would probably be eating a roadrunner sammich!)