I installed a 220V powerhouse fountain and light in my 1/2 acre pond. I alos have a high concentration of oak and hickory trees that cause a lot of leaves to enter the water in the fall.

Have been using the powerhouse unit for 1.5 years and it has yet to skip a beat. Here is a link to the place I purchased it.

http://www.missourifishfarms.com/aquaculture_equipment/pond_lake_aerators.htm