| Dan
Very interesting design!
I'm a little slow so bare with me on my questions. You say that the PS sits in a gravity feed sump. So what you're saying is that the water is pumped to the PS trickle tower and the exit water falls(?) into the sump where it gravity flows back to the pond, right? What I don't understand is how the foam moves out the Y?
Or is the PS sitting in water that hasn't risen to the exit pipe yet?
So water pumped to the TT/PS (which sits on the bottom of the sump barrel) exits the bottom of the PS via holes or slots to the void area between the inside barrel wall and the outside PS wall eventually working it's way up to the level of the sumps' exit pipe which returns it to the pond?
The bubbling foam is so elastic, from the disolved organics, that it resists the downward beating and preasure of the in coming water, exiting the void side of the Y which is the path of least resistance.
Is this whats going on?
Maybe this is the cure for the surface foaming of most TT.
Jim |