Thanks for the picture. Hopefully i'll be finishing my stand over the 4th and was trying to figure out how to mount the controll panel.
Typically the outflow is up so any airbubbles will flow out and not cavitate and I think i've read that the pump works better restricted with the valve on the output side. But if it works, who cares, right?
You start with a full bag of luck and a empty bag of experience, your goal is to fill the bag of experience before you empty your bag of luck