Does Anyone Dose for Iodine?

[LeanneP]

I have to say that I do believe now when they say that shrimps need iodine too as one of my cleaner shrimps almost had no antennas left and he started growing algae on his shell. I started dosing iodine in the last week or so and he just molted this morning with almost normal antennas again. I am just wondering why my iodine is so low when it seems like this isn't that common of a problem with the shrimps. My other corals are doing great with the exception of my bubble.