Dosing Iodine??

[CAT]

People are talking about using water changes instead of adding iodine. I thought Iodine was fairly volatile so I guess I didn't expect there would be any added to salt mixes. I just checked the Aquarium Frontiers article on the breakdown of salt mixes and Iodine is not one of the compounds they tested for - doesn't mean there isn't any of course...but does anyone know if there is actually any iodine added to the synthetic mixes?

 

[simonh]

Aquarium Frontiers didn't test for iodine in the salt mixes because Marlin Atkinson wasn't setup to do iodine analysis at the time

I have tested freshly prepared saltwater using the Salifert and Seachem test kits and it is included at around the 0.06 level in Instant Ocean.