TKD, my pond is a little over 3 acres depending on what time of year. Rainy season it's larger than it is in the summer. Now I am no expert but looking at what you posted on your alk and pH I would add some agg lime to your pond. Raise the pH to the 7.2 range and the alk will come up also. That will help to clear up the water in many cases. There are several ways to add it to a full pond. I add it by running water over it and washing it into the pond.
