Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants UT OH! what did I do wrong?

I have a new pond, 2 ac. and have a bad FA problem as well. I wanted to wait and see before I applied any chemicals but the water level keeps dropping due to lack of rain and the FA seems to be expanding.

Does FA oxygenate water like other plants and use up Oxygen when it is dying? I feel like I should do something other than try to rake it out ( futile effort).

With the water level dropping would this be a good, bad or indifferent time to use chemicals? What will happen to the pond if I just choose to ignore the FA into the future?