Ignition coil question

[Welsh Jeepster]

Fuel filter arrived today ( just a temp fitment as the correct Toyota part has to come from overseas). After a good few minutes of tick over and me revving the engine ( no test drive though as it’s too cold, wet and dark out) the filter has only half filled. Should this be full? Does that suggest a weak pump?

 

[charliemeyer007]

Normal enough. Want the filter full, stand it straight up with inlet on the bottom.