Fishman007
Aquarium Advice Addict
My iodine was low (it was at nearly 0 when my LFS tested it 2 weeks ago), which I learned probably killed the shrimp after molting. The other factor in my poor shrimp's death was probably nitrate (which is now completely under control.)
Another thing I learned that may or may not be true is that iodine is a good supplement for soft corals (it seems like it was used up pretty quick too.)
I would think if your salt mix is reef grade it would have iodine.