So I have a new this year cartridge filter. I clean it regularly. I have no water problems and the out flow is fantastic. On high speed the pump will push water clear across the pool. My issue is the rising pressure. It went from the standard 11psi to 14psi. I cleaned the impeller. There is no blockage in my lines. The filter is nearly white still. Cleaned in between the pleats. My valves are wide open. I have a simple waterway 2hp 2sp pump with a single cartridge filter. It’s 150sq feet because that’s all I could find this year. 200 is max for this filter system. One skimmer. One return. Standard agp, except it’s big. So. What is building the pressure you think? Could this basic cheap generic filter just be crapping out? Edit to say I don’t use any chemicals other than bbb, acid and cya as needed. Nothing other than bleach and a little cya for two months.