Originally Posted by Archena
look like a clog waiting to happen
If you're going from large ID pipe to small ID pipe then maybe a small effluent or sludge or sewage pump will help. Depending on the consistency, a pond pump may even work.
There's no penalty except financial for oversizing the pump.
Sensing when the pump needs to turn on is a little more complicated so you may want to run it on a timer.
Work it all out on paper before you spend a dime. I've heard this forum will do ahttp://en.wikipedia.org/wiki/Design_review