15 psi?

[RobDHW]

I don't know what the pressure *should be* but I backwash when it's gone up 8 to 10 lbs. from where it is after the last backwash, when it's clean.

[CarlD]

My normal full pressure (I have a 2 speed) is 20psi. When it goes up to 23-25, I backwash. So 15psi sounds just fine to me!

I still think your pump and filter are overkill, but if it works...

Plus, if you put in a bigger pool, this pump and filter should be good up to 15-20,000 gallons (for an AG).