Whoa! Our temp here was 31 degrees this am. I'm wondering if the shoreline of your pond saw some skim ice.
All western streams and lakes get some degree of murkiness in spring. Some look like chocolate milk, some like coffee with cream; many only are very slightly discolored. I suppose most of the color is from erosionary forces and a smaller amount of discoloring is from biological responses to nutrient additions.
That's such incredibly wonderful news that fish have survived. So many of us have followed your journey, fascinated by your every post and pic. We just KNEW that you were on the road to success, and seeing your determination, we knew you'd get it figured out.