It's taken 2 months,but I've finally got my pond built and running (pics eventually). Filled it (~1000 gallons)and have been running the water into a skimmer and out through the waterfall. There is a decent amount of turnover (3300GPH pump). All that being said, the water has a greenish-brown tint to it. When I take a cup and scoop some out, it looks clear with no sediment, but the pond still looks slightly brown. I have yet to add any plants or fish, as I'm still tinkering with the waterfall. But my question is, is this something that can be fixed (or that I should even worry about)? I expected it to get slightly brown once I added plants and fish, but not when I'm just running water through.