ok so here is how to make your in tank pump into a 90 gph and 25psi unit...
this is what your in tank unit looks like...
take the green line and remove it and replace it with high pressure submersable 1/2 inch line and 2 hose clamps... and the red line that is circled you can either discard or leave disconnected at the bottom its just the return line anyways
just trying to help you guys out instead of buying a AirDog or Fass you can do this to get by till you get around to getting one