This may be a question for Raychel Watkins—she’s a member here. Raychel tinkers with different siphon designs, maybe she could help...? Good luck.
I think those are air lift siphons, meaning that air bubbles are blown into them and they carry water from one tank to another.
One would have to see a picture to really know what type siphon it is. It could be air puhing from one tank to another or it could just be a siphon pulling water from one side to another. you just fill the u up with water and cove both ends up tight, turn u upside down one end in one tank in the other. Then let go and if one is lower than the other it will pull water over to the other tank. I had tried hat and it worked pretty good. If air is pushing then you get oxygenatioj
thanks for the replies,
this is a youtube link to the vid that i saw this thing in
This is just a straight up siphon that they are using. You don't want to run air near a siphon like this or it will fill up with air and break the siphon.
I call it a water bridge to people who don't know siphons well. It makes more sense to them.
On the left most barrel, I see the top of a pipe. I am assuming that's a stand pipe that drains water into a sump or something. The siphon will balance the water level between the two barrels and the tank up to the height of the stand pipe.