I have a Pentair cartridge filter which I think needs the cartridge replaced but wanted to get opinions. I have started to see the pressure go from 8-10 psi after a cleaning to about 16 in 4 days and 20 in a week.
My water chemistry is as follows:
Calcium about 120
I've read on the forum here that one should be cleaning the cartridges once every few months.
I usually clean as told in this forum. I take it out, put it in a bin with 1 cup dishwasher detergent and let it soak. A day later I rinse it out with a hose and nozzle.
In the past I've made one error which may have contributed to my problem. I've added DE to the filter but I've done it maybe a few times only. I've had the filter about 3.5 years.
Should I acid wash it?
Should I bleach it?
The pleats look good and are not damaged.