OK great this is all great information for me to digest.
Without changing the pump can't I put a 1.5 hp impeller on my StayRite pump. Maybe change the pump later. More torque but less water throughput and less money for now.

My Chemical levels are ( from a 6 way strip)
TH 400
FC 2
PH 7.5
TA 80
CYA 30-50

Thia is a salt water pool with a Goldline Controls system.

Thanks JK