Hay rob, I have a quick question about your show on overflow boxes. How do you start you inital syphon when you first install the overflowboxes?

here is the easiest way..

get a piece of airline tubing and put it in so one end is passed the middle of the u-tube, and the other end sticks out about 2 feet.

fill both compartments of the overflow with water
insert U-tube (with airline tube in it)
once in place, slowly pull the airline tube out until the end is at the very center/top
then suck on the tube to start the siphon.. :)

ah ok easy enough thanks.:)