For a pond your size we encourage customers to invest in an external filter which will have more filtering capacity and not clog up as quickly. I have heard that birds like the fruit and wondered if it would be a good one to plant to attract them. Yes, this would be an excellent choice. The botanical name is Viburnum trilobum. It blooms in mid-spring with a lacy cluster of pretty white flowers.
Red berries replace the blooms from midsummer through the winter.
In the fall the lush green foliage becomes vibrant yellows and reds. It grows to a mature height of 6 to 12 feet. It is hardy in zones 2 through 7. Plant it in full sun to partial shade, in soil that is moist with good drainage. They are everywhere - on the deck overhang, and all over the yard.