I recently bought a house in a suburb of Chicago, IL with a pool. I know I need to close the pool for the winter, but I'm a little unsure on some of the finer points of the "how". Hoping I could get some help. I keep reading that I need to get the pool up to shock levels (not entirely sure what level that is?) and then I need to drain the pool to 6 inches below the return. The issue I have with that is that I have 2 return jets - on at the top of the pool and one near the bottom (see attached pictures). Am I really supposed to drain the entire pool each winter? Do I plug the lines with something? Something about needing to pour antifreeze in the filter? Do I need to disassemble the entire system and plug/block off all the holes? I guess I'm more than a bit lost. Please help me! haha.
13,500 gallons, Above Ground, Round, Cartridge Filter (SwimPro Missile System)