I know this has been reinvented a million times but here is my version:
It is a 1" overflow but is seated inside of a 2" pipe. It is a bit more compact and clean design.
Yeah, it works just like the original sticky version. However the pipe that the tank water flows into is a 2" and the 1" that flows over the side of the tank is inside of it. I did some calculations and there is the same square inches available in the 2" as there is in the 1"
Worked great in a test run, started and stopped it, restarted no problem. The glue is drying right now, so I won't have it completely hooked up for a bit.