I am attempting to do so in a variety of ways. For example, I am trying to replicate this set up seeing as how I have the same components essentially. My PMP-400 is mounted underneath my Koolance pump top just like in the video.
The port on the left is "out" and on the right is the "in" port. Just like in the video I have the longer piece of tubing submerged in the sink water and the shorter tubing above the water to refill the sink. When I start the pump however, I cannot get the pump to "suck in" the water through the inlet port, it just runs dry. For clarification, I am powering my pump via a spare power supply (PC Power & Cooling 750w) connected to a six port 3-pin fan header module.