15,000 gallon pool/spa with heater
sta rite 1.5 hp pump, phk2ra6f-103L
sta rite sand filter, 350lbs sand, cristal-flo 2, 145363
Multi valve system because of the spa
starting pressure 20psi? is that about right/normal?
so I let it get upto 30psi before back washing? seems kinda high, but thats why i'm here asking cause you guys are the experts.