I just installed a new filter and pump. Pentair Cart Filter 320sq and a whisperflo 1.5hp pump.
I used 2" piping thru out.
When I set the return to only the spa, the pressure in the filter jumps by 15-18psi, goes from 15psi to about 30-32psi.
The spa is small only has 4 jets
Is this normal or okay for the filter?