@TangerineSpeedo This is really cool. So the blue is the siphon line?This might give you some ideas. It was a Nano project I did with a Surge filter. Water was pumped up to the filter, went through the chambers and entered two chambers that used a Bell siphon in each. Each chamber was filled with Bio Balls. As each chamber filled up the Bell siphon would drain the chamber in a matter of seconds, dumping water into the tank with a surge. Because the rapid action of the filling and emptying of the chambers the Bio balls stayed clean and the air exchange was at it's optimal value.
What would activate the siphon on intervals to create the surge?
What's the function of that upside down 3-lined manifold? Are the bottom fittings open?
Lot of questions, never seen this!