I am north of Dayton, Ohio. And yes it had some dark green color to it, no FA floating. I considered it murky? I did not date when I added 1 gal of aqua shade, or 1/2 gal cutrine. Some where near end of July 1st of Aug? I usually have too much water flow to use aqua, but in July and Aug it will usually slow down and then no flow out later in Aug.. Thanks for any info My pond is close to an acre and a half. I have drainage tiles,springs, and farm field run off that come in.