I had a power failure today and can't remember how to start the siphon on my hang-on the back overflow going again. I have a 58 gal. tank with a 20 gal. sump underneath. The overflow has a 3/4" u-shaped tube to carry the water from the overflow to the drain. I managed to do it originally just trying to hold water in the tube to get it started. There must be a better way! I've searched on this board but no luck. Any help anyone?
