Originally Posted by SouthernGorilla
The big advantage of this DIY design over the factory designs, if I see it right, is that this one puts the media on the pressure side of the pump and the factory units put the media on the suction side. That alone makes the DIY vastly superior even if it doesn't save much money.
Why would this make it superior?
There is a rather large advantage to putting the media on the suction side - if something hard goes into the intake, it will be trapped in the media instead of potentially damaging the impeller.