Pond with stream
Hello, I'm very new to this but always dreamed about having my fish. I bought a house that have natural pond that fed by stream. Its oval 20 by 40 feet and gets gradually deeper up to 5 -6 feet in a center of it. Right now water is crystal clear with running stream, but I remember in a summer when we had no rain for a long time water was brownish and low since stream disappeared at this time. My question is : 1)do I have to run filter if stream is active and water going at one end of pond and escaping at other? 2? there is a lot of leaves on a bottom of pond now from surrounding trees .Should I remove all leaves from pond before getting koi(that's what Iam planning to do.
Any input appreciated .