As far as inverts go I've got a bunch of snails and hermit crabs, a few starfish, some fan worms, a couple of clams, a few oysters, 5 cleaner shrimp, 3 or 4 blood shrimp, and I think that's about it. I know the shrimp need Iodine to promote growth and molting, etc. but are inverts the only things that need Iodine?
I'm not trying to go crazy with dosing stuff into the tank, just trying to maintain NSW
levels of everything I can. I read that NSW
has about 0.06 mg
/L of Iodine and my test kit is barely able to detect anything in my tank, which is what prompted my original question. If it turns out the test kits for Iodine are not very accurate then I guess that is a "problem"...