bio reactor

Hey So I scored a bio reactor, but looks like I'm missing something here. If I am right, there should be a pump connected to the fitting? I tried to look this bio reactor up online and cant find anything close to this. Does anyone have a picture of there so I can reference this? Thanks in...

Has anyone setup a Bashsea Bio Reactor to run, externally? I have a Red Sea 350 - just got the 6-24. It's a beast....and won't fit inside the sump. I wanna run it beside the tank. Is it possible? I tried setting it up - after a few leaks, gurgling pipes - a discovered, I need a bigger air...