I have had the Intex 32x16x52 ultra pool up for 2 years and running saltwater system took it down replaced all of the upper frame and set back up as chlorine pool so far 2 years no rusting. The saltwater system was hard to keep the chemicals right. Not sure if it was because of where I live but I have had better luck with the chlorine system. I am upgrading to a hayward pump and sand filter today the Intex pump is old and tired.How long it last? and what was the reason for the fail?
We have had two...first one frame rusted out. That one was first on the market at the time and it lasted about 4-5 years. Our second and current one is about three years and frame is good but leaks loosing about and inch every twelve hours. The leaks are somewhere under bladder. For the cost and the number of intex pools purchased (our first was 12' bladder, then 18" bladder, then 24' Framed, and currently 24' Ultra Frame) we opted to bite the bullet and purchase a more permanent resin hybrid pool. The Intexs were nice as they grew with the kids, but if budget allows you can purchase a better quality, longer lasting pool. In our particular situation we have put so much effort in site location preparation (each pool moved to new location in yard) and time and expense we should have done it years ago. Hope our experience helps you.