High Iodine

Nick Gianakos · Jul 29, 2019

So I sent out an ICP test and the result gave me an iodine level of 1.56ppm. I’m not dosing with any iodine so I’m not sure where it’s coming from. What should I do and where is it coming from?

Hemmdog · Jul 29, 2019

It can be in frozen food I’ve heard but that seems pretty high. That was through triton?

Nick Gianakos · Jul 29, 2019

Hemmdog said:
It can be in frozen food I’ve heard but that seems pretty high. That was through triton?

Not triton, Icp-analysis.

Paul Howard · Dec 31, 2019

ICP just showed high Iodine for me too, .4 ppm, Red Sea Iodine test confirms, so much for weekly additions w/o testing! Although ICP says lower or imminent death to coral, I am going to stop dosing, only. LPS and SPS does not look like it's dying...

Randy Holmes-Farley · Dec 31, 2019

Paul Howard said:
ICP just showed high Iodine for me too, .4 ppm, Red Sea Iodine test confirms, so much for weekly additions w/o testing! Although ICP says lower or imminent death to coral, I am going to stop dosing, only. LPS and SPS does not look like it's dying...

I’d just stop dosing. I also don’t think it useful.

Paul Howard · Dec 31, 2019

I will post results of this approach, thank you!

Jeeperz · Dec 31, 2019

If my fresh mix saltwater measures less than .01, that's not an issue? My tank measure 0. With the seachem test.

Rick Mathew · Dec 31, 2019

Nick Gianakos said:
So I sent out an ICP test and the result gave me an iodine level of 1.56ppm. I’m not dosing with any iodine so I’m not sure where it’s coming from. What should I do and where is it coming from?

Are any of your tank inhabitants showing signs of distress? ...with that level I would suspect some of them to be unhappy!

Terry Mattson · Dec 31, 2019

Nick Gianakos said:
So I sent out an ICP test and the result gave me an iodine level of 1.56ppm. I’m not dosing with any iodine so I’m not sure where it’s coming from. What should I do and where is it coming from?

Is it ppm or parts per billion on test results

Randy Holmes-Farley · Dec 31, 2019

Jeeperz said:
If my fresh mix saltwater measures less than .01, that's not an issue? My tank measure 0. With the seachem test.

I dont consider it important, but some folks may.

Terry Mattson · Dec 31, 2019

Randy Holmes-Farley said:
I dont consider it important, but some folks may.

Randy, what is the level of iodide in natural softwater?

Terry Mattson · Dec 31, 2019

Terry Mattson said:
Randy, what is the level of iodide in natural softwater?

Saltwater

Jeeperz · Dec 31, 2019

It's not even important for crabs? I always understood they needed iodine/iodide to molt, but I'm not a scientist or anything.

Rick Mathew · Dec 31, 2019

Terry Mattson said:
Is it ppm or parts per billion on test results

ICP Analysis generally reports in PPM...at least on all the reports I have received.

lavoisier · Jan 1, 2020

Terry Mattson said:
Saltwater

If I remember correctly, it is .06.

Randy Holmes-Farley · Jan 1, 2020

Terry Mattson said:
Randy, what is the level of iodide in natural softwater?

0.06 ppm, primarily as iodate, IO3-, and some as iodide, I-, the latter of which is more bioavailable.

Randy Holmes-Farley · Jan 1, 2020

Jeeperz said:
It's not even important for crabs? I always understood they needed iodine/iodide to molt, but I'm not a scientist or anything.

scientists do not report any such need. It’s a hobby idea based on the fact that if you suddenly boost iodine shrimp and crabs may suddenly molt. One thought is that is a response to an unwanted irritant rather than a desired nutrient.
In any case, many of use doses iodine and then stopped and detected no difference in our ability to keep shrimp or crabs.

Marine foods also have lots of iodine, and even organisms that actually have a need for iodine may get it from foods rather than from the water itself.

Dmev60 · May 15, 2020

In addition to water changes are there other ways to lower iodine levels in a tank? I tested mine recently and it was over 0.09 according to RedSea test kit. I have been dosing, too much apparently. Most of my corals look okay. I have an elegance that is not happy and my xenias are a little stressed. but otherwise all is ok.

X-37B · May 15, 2020

I dont do water changes and dose trace which has it. My level has been .03 for the last 6+ months. I also feed heavy, 2 cubes frozen 3-4 times a day. Some times hikari pellets, r.o.e., oyster feast.
Lrs reef frenzy is replacing some cubes now.
Is it beneficial? As long as it registers on my once a month test im good.
I am planning to send out a test in one month, when my tank turns 1 year old. It will be interestimg to see what my levels are doing zero water changes since startup.
All corals are growimg and look good to me lol.

Randy Holmes-Farley · May 15, 2020

Dmev60 said:
In addition to water changes are there other ways to lower iodine levels in a tank? I tested mine recently and it was over 0.09 according to RedSea test kit. I have been dosing, too much apparently. Most of my corals look okay. I have an elegance that is not happy and my xenias are a little stressed. but otherwise all is ok.

Not other than not dosing it. I doubt it is a substantial issue.