Well that's the tricky part. About 6yrs ago, I ran a 220v line from the house to the pond (500ft). It's for a irrigation/sprinkler pump that waters my yard, the only problem is, the line is controlled by a contactor at the house. So the line is only "hot" when the sprinklers are on. Didn't think far enough ahead to bury a second line. I have been contemplating adding a different type of contactor for constant power. But apparently running a aerator for 1hr a day (run time of the sprinklers) is not gonna get it!
