I do keep a close eye on the water in my pool. In looking over my test results since 2007, there are only six times I had a reading below 7.0 (one 6.8 and five 6.9). Three of those were the first reading of the year at pool opening. The ph is kept 7.2 - 7.6 almost all the time. I don't see my water possibly being the source of this rusting problem. Also, there is no air in the filter system.
My next step will be to contact Hayward, In The Swim Pool Supplies and Amazon to see if they will help me. If not, I'll go to the next step.
My next step will be to contact Hayward, In The Swim Pool Supplies and Amazon to see if they will help me. If not, I'll go to the next step.