I wasn't so keen on Copper Sulfate. I really would like to keep the pond all natural and use natural remedies to remove the worms. How would I go about adding a species like sheephead? I'm in the process to renovating the pond is this part of the process.

I went out on a boat yesterday and there is WAY to much filamentous algae under the surface that I wasn't aware of. About 70% of the pond is covered beneath the surface.