I'm curious what impact the leaves from the trees surrounding your pond has caused, if any?
It's too early to see any impact since we are only about 3 years with water (comprised of 2 seasons of autumn leafage). Having a road around one side helps keep some of the leaves out, but I can still definitely see them in the water from being blown in. It will likely take a number of years, but I can see where the leaves will have an effect.