Sorry the abreviations get funny on boards 'WAF' is wife acceptance factor.

I thank you for you help and interest. I like the salt water and I am interested in finding out about the rust and its control in a pool.

The whole balence of PH and all is a nice accomplishment that I have read about in this forum and applied with nice results.

A "clear pool is a thing of beauty"

Thanks again.

deep_blue