Pond Boss Forums INTRO Questions & Observations Pond Weed matted on surface

I'm not familiar with your area enough to say what grows best there, but If there's something that will out-compete pondweed you'll have bigger problems than you have now.
Chemical or Grass carp.. pros and cons.. 2-3 more GC may help the situation as long as they don't eradicate it completely because then you will start having turbidity issues as they rummage bottom sediments.
It's all about balance so a little at a time either way.