My one acre pond is new. It began filling last November and is now full. Since the day it began to fill, the water has looked like weak lemonade. Is this from the heavy clay? I've tested the water and with the exception of the pH being a little low, everything else was fine. I do have one area where I lack some grass that I'm sure is causing the pond to stain, however even after I put some water into a clear mason jar, the color never changed, even after there was enough time for anything in the water to settle to the bottom.

Is this something I should be worried about?