Use a net to keep leaves from falling into pond water. A net stretched across the pond surface requires daily emptying when leaves are falling thickest. A pond shelter type kit supports netting on a frame that prevents leaves from ever touching the water. An elevated net is also easier to keep free of leaves. If leaves do land in water, scoop them out. Also keep the skimmer basket emptied of leaves. Decomposing leaves in a pond release materials that can harm fish and muddy the water.
A Midsummer Day's Dream - A lot of gardening seems to come down to trees but there is opportunity for more. Having a diverse structure supercharges the seasons, and this means planting with trees, shrubs, perennials, grasses and ground cover.