http://www.exo-terra.com/EN/products...flo_250_i.html
This is the pump I am useing. I would love to put the pump inline on the return side, but I can't really figure out a way to do this. As you can see in the picture, the bottom of the pump, where the water intake is, is flat and not made to use any type of connections for the intake.
If you can think of a way to make this pump work inline I'm all ears, cause I would love too do that.