Why are my top rail rusting on my pool
I have a 6 yr old above gound pool (Swim n Play) Ever since the first year I have problems with my top rails rusting. I have already replaced them and still they are rusting, now to the point where the rust, rusted my liner. Last year I had the water tested at a pool place at least 3 different times and all levels were fine and still when I opened it up this year it was just one big pile of rust. Before I decide should I rip it down or replace the rails again I need to understand why this would be happening and how to prevent before spending more money to repair.