Have Hayward Filter 150 with 1500 pleated filter and an Aquagenie skimmer/return distributor. I am having high pressure problems on the filter. I recently cleaned the cartridge with solution and sprayed it out as usual. After returning it to operation it went immediately to 16 psi and within 3 days it was at 20 psi. Usually the pattern is 12 psi to start , then raising over 2 or 3 weeks to 19-20 psi, when I clean it. It's now at 23 psi - getting dangerous. Don't know if there is something on discharge system like Aquagenie pressure chamber/return distributor plates that are plugged up with something or what. Maybe it's the filter cartridge? One problem I have with this immediate high pressure is with vacuuming. I can't get good suction efficient vacuuming when the prssure gets up to 18-20 psi.