I have tons of this plant. Not sure what it is. I thought maybe starry stonewort but then the tips throw me off as it looks like it's trying to flower. Maybe a narrow leaf, sago, or fine leaf pond weed? i know I have American Pondweed which I easily to deal with but not sure how to control whatever this is.
From the photo, I wouldn’t call this starry stonewort. It looks much more like a fine-leaved submerged pondweed, possibly one of the Potamogeton species (such as sago/fine-leaf pondweed)
