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I have heard mixed results on dosing iodine. I have heard that it promotes premature molting in shrimp and the like and causes harm to them. is this a valid statement. can anyone shed some light on the use of iodine. I dose half the recommended amount I am scared I do not want to harm my shrimps (but I dose cause its good for my clams).

any input is greatly appreciated.

I do not think that anything that we routinely keep need supplemental iodine. I've had shrimp living in my tank for years, and I've not added any supplemental iodine for more than 5 years. :)
Re: Iodine

<a href=showthread.php?s=&postid=6946737#post6946737 target=_blank>Originally posted</a> by graphixx22
(but I dose cause its good for my clams).

there's no need to add any just for your clams. the amount found in most salt mixes and foods is plenty.