I have had my 18' Intex Ultra Frame pool for about 6 years now and thankfully have had no issues other than chemical imbalances once in a while. However, this year I opened /changed my pool filter set up from a cartridge system to an ExtremePowerUS 3/4 hp 13" sand system. Sadly the pump setup did not go smoothly. I wanted to change to 1.5 " hoses from the old cartridge system sized 1.25" and of course I didn't have the needed fittings. I've been in a spin trying to get it right. I also have a VERY old brand new Intex Krystal Clear Saltwater System (Model CS8110) I wanted to connect up but have waited to get the sand filter system operating correctly. Thanks for adding me !