I have gotten into a cycle where my pump pressure gets up around 30-32 psi and then it is time to clean the cartridge filter. I hose it down and then it goes down to 20 psi. Then 2 weeks later it is back to 30-35!
My pool is crystal clear, pump runs about 10 hours a day, and I have shocked it to ensure there is no FC. Since the pressure keeps going up, is this an indication a new filter is required?
We have been in the house for 2.5 years and I am not sure of the maintenance of the filter before that point.
When you replace a filter, is it strictly on a yearly, 5 yearly, etc schedule... or is it time to replace it when you get high PSI ratings that wont go down with a clear pool?
CYA is around 50, TA, PH at normal levels.