I also get a small amount of very dark brown to black scum floating unattached very similar to polen in the spring in how it looks.
Vis. is apx 2ft. After a heavy rain I do get a small amount of orange/tan clay particles entering in one end of the pond but it always settles quickly.
Everything else seems ok, I'm just not crazy about the color.
WS, we got the heavy showers & then 2 weeks of constant rain. I guess mine turned brown around the first of May.
Sure miss that nice dark green color.
