Last week the pressure on my filter was high so I changed out the filter for a new one and the problem was solved. Today I checked the pump and it's high again. If it's the filter, I can't clean it until the weekend with our temps in the 20s all week. I'm wondering what will happen if I take the filter out and let it run for a few days that way. Not sure if that will resolve the pressure problem but thought I'd start there. I've never run the pump without the cartridge in it so wondered if that would be worse than the high pressure.