Why does my filter pressure rise even after I clean it?

[Freddie]

I clean my cartridge filter and the pressure drops like it should but after just a few days it climbs back up again. The pool looks clear, so I’m confused why the pressure keeps rising so fast. Am I missing something?

 

[Zephyr]

I clean my cartridge filter and the pressure drops like it should but after just a few days it climbs back up again. The pool looks clear, so I’m confused why the pressure keeps rising so fast. Am I missing something?

Even if the water looks clear fine debris can still clog the filter. Pollen and dust can raise pressure pretty quickly.

 

[Manikshaw]

I clean my cartridge filter and the pressure drops like it should but after just a few days it climbs back up again. The pool looks clear, so I’m confused why the pressure keeps rising so fast. Am I missing something?

Check your skimmer and pump baskets too. If they’re dirty it can restrict flow and make the pressure go up.

 

[syedsam]

I clean my cartridge filter and the pressure drops like it should but after just a few days it climbs back up again. The pool looks clear, so I’m confused why the pressure keeps rising so fast. Am I missing something?

Sometimes oils and sunscreen stick to the cartridges. A deep soak with a filter cleaner works better than just rinsing with a hose.

 

[Freddie]

That makes sense. I’ve only been rinsing it not soaking it. I’ll try a proper cleaner this time. Thanks everyone.

 

[Daniel Adams]

I’ve had this happen too. Even if the water looks clear, fine dust or sunscreen can still clog the filter. I usually soak the cartridge with a proper cleaner so the pressure doesn’t climb back up so fast.