Pond Boss Forums INTRO Questions & Observations Stopping the sediment

The fish are safe to eat. The gasses at the pond bottom are there because of little to no O2 in that layer. Bottom aeration will help with that. If there is O2 at the pond bottom, it will help the leaves decompose quicker too.

As for the stream, the silt and sediment stay in suspension due to the fast running water. When the water pools up in front of the dam, it slows down and the silt/sediment settles out. Once the water goes over the dam, it is moving at a fast pace again, and the silt/sediment will stay in suspension.