Bullet 2 skimmer operation?

[whatcaneyedo]

How much clearance do you have above the water level in your sump?

I think the big issue that the instructions want you to avoid is having too much back pressure after the gate valve because that would make it impossible to set the internal water level where it needs to be... Try setting it up the way you want and see if it works. If you find that even with the gate valve wide open you cant get the water level in the skimmer low enough you will know that there is too much back pressure because its submersed.