Pond Boss Forums AQUATIC VEGETATION Identifying plants ID'ing a Pond weed in WI

I would guess that it is chara as well. It stinks and will begin to grow as the weather/water warms. It is a type of algae, not a true plant.
Typically a copper based product does very well with chara, especially a granular such as Cutrine Plus granular.
A picture would help in IDing.