First of all, here is a nice animation to show you how the auto-siphon functions so you can integrate it to your eb and flood system like aquaponics. Found on youtube, made by valschep.
How can I build one?
Here you can find two infographics.
One is a cuttrough of the autosiphon, the other is an exploded view.
You can also download the building plan of the autosiphon we use for the Miniponics systems. It works the same way as a big autosiphon, but it has been made smaller to fit our Miniponics.