Morning Glory Overflow Adapter for 1" and 3/4" pipes

This is a spillway pipe-topper that I made to ease the transition of water flow in one part of my aquaponics system. I made it for my SLO (solids-lift overflow), but I suspect it would also be appropriate for use inside a bell siphon.

The rounded/enlarged lip of the Morning Glory (or Glory-Hole) spillway gets the water to transition into the downpipe without piling up at the edge. The improvement is surprisingly effective at flowing water. So much so, that the overflow pipe does not need to b