Intex SPA pump adapter

I am using old dishwasher pump to circulate water, although it is centrifugal - as pump lays on ground it cannot prime itself sucking water from above (hose has to go over pool side).

this connector allows to use internal pump for filtering water - as its outlet goes back inside and is threaded - why not use it ? Dishwasher pump cannot be enclosed (so it is audible) and it has to be primed (put water into hose manually).

There is a catch - Internal Intex pump has two magnetic flow sensors - if flow is to slow - controller throws an error. So this wont work if water has to be pumped more than half a meter above water level - internal pump is so weak that when i added 3m of inox spiral pipe to exchange additional heat from exhaust pipe - water has to be moved little highier and pump will stall when jets are activated (I have no idea why - jets are powered from other pump)

as for design - it was quick and dirty work in…Tinkercad

outlet for the hose has no connector -