Ok, if you haven't been able to tell I'm extremely bored tonight. So here's my attempt at some pictures and a walkthrough of how it works.
First of all, the steps to first setup your overflow box/wet dry (assuming your using a u-tube style overflow).
1. Place overflow box on the top of tank
2. Place sump/wet-dry under the tank
3. Set up all of your return plumbing, and your overflow plumbing. Overflow->sump... Return pump -> display
4. Now fill the exterior section of the overflow box until the u-tube is submerged.
5. Then stick a long piece of airline tubing to the top of the u-tube and suck all of the air out of the u-tube.
6. Place thumb over end of airline tubing and pull it out.
7. Start return pump as soon as siphon is started. (best to do this with a friend).
Everything should now be running smoothly. Here are a couple pictures of my tank system while it is running.
I set up a light switch to run my return pump, (UP = on)
Here's a pic of the display while its running
And the sump while it is running
Now, I turn the return pump off.
Here's a new pic of the display, as you can tell the water has lowered slightly.
And one of the sump after the pump has stopped. Water level has risen.
Now here are a couple pictures of the overflow box after the pump was stopped. This shows that the siphon is still maintained within the overflow box (notice how both sides of the u-tube are submerged and the u-tube is still completely full).
Interior
Exterior.
Now, I can flip the switch back on and the system runs as normal.