Aloha K. Sjödin,
Just so I'm clear, what facet, period, year, or monthly cycle is asking you to place a fountain in the north right now? When you are in a flat/one-room living area, place your fountain where it needs to be and then turn if off at night. Some practitioners get really clear about where the direction sectors are in their flats, either by natural structural divisions, or marking them.
Much Love, Shawn