The guys on the low-O2 board mentioned using iodophor over Starsan. I forget the specific reason but I think it had something to do with it having a wider range of sanitizing power. I never, ever had an issue with Starsan but I did buy a bottle of iodophor. With all the brewing I've done lately I ran out of Starsan and started using the iodophor with good results. I always keep a bucket of sanitizer from the latest batch in case I need to do a quick sanitizing (flask, funnel, etc). The iodophor solution I have in this bucket (from January 6) looks like it has lost most of its color and some articles online mention that iodophor solution doesn't last as long as Starsan. I'm transferring a beer tomorrow and I'd like to sanitize some things so I'm thinking of just adding 2 caps full of iodophor to the existing water (2 caps is the suggested 5 gallon amount). Anyone see an issue with that?
Ps. Using (and smelling) iodophor reminds me of brewing when I was a newbie. It's one of the more memorable smells from brewday.