On a slighly different note, has anyone used these? http://www.farmhousebrewingsupply.c...l-and-pvc-free-beer-tubing-3-16-in-id-per-ft/
To me, Iodophor has a nauseating chlorine bleach-like odor, and I would not want to take a chance of that odor staying in the plastic lines since it is a closed environment with no place for the odor to go except to catch onto the beer.
think i would prefer to leave starsan in my lines, but I don't think you would be hurt by leaving IO in your lines. It usually fades color as it loses potency.
I leave idophor in my lines. I have noticed no off flavors from it. I do waste at least one beer doing this rinsing the line.