<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Katspaw:
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Iodine will improve shrimp shedding the extoskelton, as well as being great for anyone who keeps anemones as well. In the ocean iodine levels are at .06 but become depleted in our own systems rather quickly. If you use an R/O system that cleans the water 99.9 % pure, then you are not adding any elemnts back in with top off. You will on water changes becasue the elements are in the dryed salts we use. I use Kent's R/O prep in my top off water. Now I run a calcium reactor to keep my tank water at 450+ ppm in calcium and 11 on alk. Most test kits that I use are
Salifert's. they seem to work the best. Iodine only shows about two to three hours after dosing. So testing for it is almost impossible. Hope this helps.</strong><hr></blockquote>
Iodine additions are a hotly debated topic. I disagree that
uncontrolled iodine additions "will improve shrimp shedding the extoskelton". I say uncontrolled because we (as hobbyists) have no accurate means of measuring levels. In fact, overdosing iodine can force a premature molt, possibly causing the death of the poor shrimp (or crab).
If you do water changes, run a reactor, or feed the tank, you are adding iodine. Iodine is great for cuts, but I think I'll skip adding it to my tank. Do a search for "iodine" and check posts by Shimek, Borneman, and Farley (possibly Bingman as well) for views from the experts on the subject.
FWIW I run a reactor, add RO/DI water for topoff, and feed the tank. No other additives necessary.
As far as calcium/alkalinity goes, you need to test the water regularly to determine if and how much B-Ionic or other product you should be adding.
Red Sea kits are notoriously inaccurate. People have good luck with Salifert, but personally I use LaMotte kits.
IMO, IME
[ November 13, 2001: Message edited by: MiNdErAsR ]</p>