I have a tiny 200 gallon pond and I built a waterfall with rocks. Unfortunately nocturnal animals have upset the balance of the rocks and I am trying to find a way to build a small waterfall that is more stable. I keep seeing these waterfall filters and can't quite see how they are installed. Anyone have a good description or site that shows installation.
Do I need to dig a hole for it?
How do I hide the spill edge?