I have got to agree with Ed. A siphon will only work by moving a water from a higher elevation to a lower. In a siphon gravity is doing the work, so unless you find a way to counter act gravity, a siphon will not work. A pump is definately your best bet. You may want to look into a very small pump that can be adjusted.
Mini-Jet 404 Powerhead (Saltwater Aquarium Supplies > Powerheads > Compact Pumps )