Hi guys, I have never owned a pool so I have a dumb question. I am going to get either a cartridge or de filter pump, do you still use chlorine and other chemicals in those pools like you do with a sand filter? I’m going to get a 24’ round pool 48”. I think from what I’ve read a 150 sq ft cartridge filter or for a de filter the Hayward e40 1 HP would be good choices for a 24’ pool? Any help is appreciated.