Help!

Put in an aerator this year with two diffusers. Left for a couple of weeks out of state and returned to a 2 acre pond full of coon tail and algae.

I have sprayed the algae with copper sulfate and have a gallon or more of glyphosate I can use but my understanding is it is to be used on emerged weeds.

I need some guidance on what can I use (preferably in a liquid form) that I can pour into the pond and it will kill the coon tail without hurting the fish.

I have added two gallons of blue dye but my understanding is that is just a growth inhibitor and not a solution.

Again, looking for something I can pour near the aerators and it will be dispersed across the pond.

Appreciate any help as the sooner is better with the warm weather we are having here in southern Illinois.....the weeds just keep growing.

BTW...pond is 2-2.5 acres average depth of six or so feet with one arm only three feet.