I just contacted Siemans Water Technologies.
http://www.water.siemens.com
Who, according to their web site, is the largest user and supplier of ion exchange resin in North America. I talked to one of their water technology experts who has 18 years of experience, 8 of which was with Culligen Corporate.
Q: Will the use of salt with "Iron Out" adversely affect the resin?
A: Absolutely not, in fact it is recommended.
Q: Will the use of 1 cup/1 gal. of "Iron Out" solution, added to brine tank once a month, adversely affect the resin?
A: He recommends using this solution once every 3 months.
Q: Is it recommended to add 1 cup of chlorine to brine tank once a month for sanitation purposes?
A: Absolutely not, the chlorine at that volume and concentration will destroy the effectiveness of the resin.
Q: Is it recommended to add 1 cup of h2o2 to the brine tank once a month for sanitation purposes?
A: Absolutely not, again this will destroy the effectiveness of the resin.
I hope this helps clarify these issues. There is an 800 number on their web site to call for technical support if interested.
Phil - Wood technology expert learning about water.