Kelly,
I finally gave up on ID because of the confusing pictures on various web sites. I tried a slightly different approach...I figured if it was Chara, Cutrine plus would kill it, and Reward would not effect it. Likewise, if it was pondweed, Reward would kill it and Cutrine Not.
I tested a very small area and Cutrine did not phase it, Reward totally wiped it out. I'm thinking I have bushy pondweed, but regardless I have something, Reward, which will control it readily until I can get grass carp re-established this fall in cooler temps.
Is this logic sound? Does pondweed = Niad?
As an aside, in three other ponds which were never fertilized this plant does not exist. In the fertilized pond (fertilized one year ago), it has exploded with growth in the absence of grass carp.
