Newbie ???: How to start siphon?

[bbvabeach]

I have an overflow box (j tube type) from aquaticlifesystems.com (their web site isn't functioning).....How do I start the siphon? I have filled both the box in the tank and the box in the back...........how do I remove the air from the tube and start the siphon? It's got to be easy but I sure can't figure it out!!!!!

 

[kart racer]

If its the u-tube type, fill both chambers with water and then insert a piece of tubing up to the top of the U and then suck the air out and the water will start to flow.