I like the wendy filter design. I might adapt that design and incorporate it into this design. Thanks for the link! And I finally found the box to the pump and it says it puts out 80gph. That should be good right? Maximum pump height is 2.5 feet.
Best way is to setup the plumbing the way you want and test. Only way to get a true measurement of what it's actually pump, especially if you put foam or mesh on the intake side, that is going to reduce flow a bit.