Chrome will not corrode or rust with out a catalyst like salt and moisture to make it happen. I have found that Florida and Hawaii are two of the worst places when it comes to this. I have seen the best chrome and billet accessories destroyed after only one month of use. You say there is no salt in the air but it is there then add the humidity found in Florida and you found the problem. The best thing may be to go with stainless or plastic accessories so not to have this problem again.