I believe I have that model (or at least I have the one that fits into the waterfall). You just put the pump in the water, make sure it doesn't run out of water, create a drip loop with the wires and plug it in.

However, the dish I was using was too small and it was making a big gloppy mess in Issa's tank, so I took it out. Maybe someday I"ll buy the waterfall part and set it up when I have space..and who knows what tank it will go in then.