High Iodine

[tripdad]

From Fauna Marin website so who knows, but anyway

"An overdose of iodine shows up quickly, especially in SPS corals. At low nutrient levels, an overdose from about 80 µg/l. (0,26 US.liq.gal.) leads to a decrease in colouration, up to a complete brown colouration of the corals. If yellow shades are desired and green fluorescence should not dominate, this value must be observed.

If there is an overdose or if one suspects that organic iodine compounds are present in too high concentration, they can be removed from the water by activated carbon and other adsorbers."

This is what I am having, Browned out colors and very reduced polyp extension which is mentioned elsewhere in their article. Colors and polyps were good then changed. I have a yellow anacropora that is losing coloration also. I have no real evidence the iodine is the culprit but my levels were 5x the recommended so trying to lower thru water changes and carbon. We shall see if it makes any difference.

 

[CodyF.]

Yes, sorry. Ammonia. From previous posts I’ve read, you don’t seem to be concerned with high ammonia.

I’m sorry Randy, I missed typed. I meant iodine. I’ve read some posts concerning iodine.

My concern is my iodine levels from the ICP. I miss spoke.

I seen a few threads you commented on and you didn’t seem terrible concerned with higher iodine levels.

I’d like to understand better. Everything else I’ve read says it’s a death sentence.

 

[CodyF.]

From Fauna Marin website so who knows, but anyway

"An overdose of iodine shows up quickly, especially in SPS corals. At low nutrient levels, an overdose from about 80 µg/l. (0,26 US.liq.gal.) leads to a decrease in colouration, up to a complete brown colouration of the corals. If yellow shades are desired and green fluorescence should not dominate, this value must be observed.

If there is an overdose or if one suspects that organic iodine compounds are present in too high concentration, they can be removed from the water by activated carbon and other adsorbers."

This is what I am having, Browned out colors and very reduced polyp extension which is mentioned elsewhere in their article. Colors and polyps were good then changed. I have a yellow anacropora that is losing coloration also. I have no real evidence the iodine is the culprit but my levels were 5x the recommended so trying to lower thru water changes and carbon. We shall see if it makes any difference.

My colors are off. I did run carbon and I’m doing daily freshwater adding, due to high salinity. Apparently I’m still a newbie….

 

[Randy Holmes-Farley]

From Fauna Marin website so who knows, but anyway

"An overdose of iodine shows up quickly, especially in SPS corals. At low nutrient levels, an overdose from about 80 µg/l. (0,26 US.liq.gal.) leads to a decrease in colouration, up to a complete brown colouration of the corals. If yellow shades are desired and green fluorescence should not dominate, this value must be observed.

If there is an overdose or if one suspects that organic iodine compounds are present in too high concentration, they can be removed from the water by activated carbon and other adsorbers."

This is what I am having, Browned out colors and very reduced polyp extension which is mentioned elsewhere in their article. Colors and polyps were good then changed. I have a yellow anacropora that is losing coloration also. I have no real evidence the iodine is the culprit but my levels were 5x the recommended so trying to lower thru water changes and carbon. We shall see if it makes any difference.

I'm not in agreement with many Fauna Marin claims which seem to lack any publicly known evidence, but if you want to remove iodine, I don't think GAC is useful unless it is an organoiodine compound, which will not have the same properties (good or bad) as the iodide and iodate normally present in seawater comprising the usual 0.06 ppm total. If GAC binds an organoiodine compound, then other organic export methods will also possibly help, especially skimming.

Inorganic iodine (iodide and iodate) is often rapidly depleted by algae and other organisms, so just not dosing it and not electing high iodine foods may well get you where you want fairly rapidly, and if not, water changes are the way.

 

[CodyF.]

@Randy Holmes-Farley whats your thoughts on iodine test kits-like salifert and the possibility of TM Pro reef-salt/ARF having iodine elevated levels.

I looked for an ICP test on the TM salt bucket but didn’t see one.

 

[Randy Holmes-Farley]

Folks writing that elevated iodine is a death sentence have often, IME, thought it was molecular iodine, I2, and looked up info relating to that form, which is unnatural in seawater and is reactive with tissues and can kill bacteria.

They see things like povidone-iodine, a disinfectant, think that's similar to what's in the tank, and make the wrong leap.

There was a thread (many, actually) on what levels of iodine cause what problems. In one of them, Christoph (principle of Oceamo) stated:

https://www.reef2reef.com/threads/iodine-high-levels.514880/

220 µg is above normal seawater values (60 µg/l), and might cause some coral browning. It is unlikely to induce further harm.
Not sure if he still thinks that, but let's ask: @Christoph

 

[Randy Holmes-Farley]

@Randy Holmes-Farley whats your thoughts on iodine test kits-like salifert and the possibility of TM Pro reef-salt/ARF having iodine elevated levels.

I looked for an ICP test on the TM salt bucket but didn’t see one.

I used a Salifert kit to generate a depletion graph long ago for my reef tank. It seemed to work fine, but cannot detect especially low levels. It took just a couple of days to go from 0.06 ppm to none detected.

 

[Christoph]

Folks writing that elevated iodine is a death sentence have often, IME, thought it was molecular iodine, I2, and looked up info relating to that form, which is unnatural in seawater and is reactive with tissues and can kill bacteria.

They see things like povidone-iodine, a disinfectant, think that's similar to what's in the tank, and make the wrong leap.

There was a thread (many, actually) on what levels of iodine cause what problems. In one of them, Christoph (principle of Oceamo) stated:

https://www.reef2reef.com/threads/iodine-high-levels.514880/

220 µg is above normal seawater values (60 µg/l), and might cause some coral browning. It is unlikely to induce further harm.
Not sure if he still thinks that, but let's ask: @Christoph

Hi,
my opiion here is unchanged.
All the best, Christoph

 

[Randy Holmes-Farley]

Thank you, Christoph. :)

 

[azreefer93]

Folks writing that elevated iodine is a death sentence have often, IME, thought it was molecular iodine, I2, and looked up info relating to that form, which is unnatural in seawater and is reactive with tissues and can kill bacteria.

They see things like povidone-iodine, a disinfectant, think that's similar to what's in the tank, and make the wrong leap.

There was a thread (many, actually) on what levels of iodine cause what problems. In one of them, Christoph (principle of Oceamo) stated:

https://www.reef2reef.com/threads/iodine-high-levels.514880/

220 µg is above normal seawater values (60 µg/l), and might cause some coral browning. It is unlikely to induce further harm.
Not sure if he still thinks that, but let's ask: @Christoph

Hi,
my opiion here is unchanged.
All the best, Christoph

My thought is at elevated levels, iodine can still can a big stress factor which can impact sps pigmentation / weaken their tissue and make them more susceptible to bacteria issues or other factors that ultimately leads to tissue loss or bleaching.

 

[Randy Holmes-Farley]

My thought is at elevated levels, iodine can still can a big stress factor which can impact sps pigmentation / weaken their tissue and make them more susceptible to bacteria issues or other factors tbat ultimately leads to tissue loss or bleaching.

I cannot dispute that, except to note that others who have had such levels do not always see any issue. But of course, that sort of secondary effect you note will vary a lot depending on other factors of the system.

 

[CodyF.]

I appreciate you guys response. Thanks for all the info.

@Randy Holmes-Farley, do you believe it’s probable it came from the salt/afr? Both are Tropic Marine, reef pro is my salt of choice.

I plan on testing my salt mix once my iodine test comes in- from salifert. I’m assuming I can test my all for reef mix as well?

 

[Randy Holmes-Farley]

I appreciate you guys response. Thanks for all the info.

@Randy Holmes-Farley, do you believe it’s probable it came from the salt/afr? Both are Tropic Marine, reef pro is my salt of choice.

I plan on testing my salt mix once my iodine test comes in- from salifert. I’m assuming I can test my all for reef mix as well?

I do not know. AFR is designed to not overload typical aquaria, but if your tank has much lower iodine consumption per unit of alk used, it’s possible.

 

[CodyF.]

I appreciate you guys response. Thanks for all the info.

@Randy Holmes-Farley, do you believe it’s probable it came from the salt/afr? Both are Tropic Marine, reef pro is my salt of choice.

I plan on testing my salt mix once my iodine test comes in- from salifert. I’m assuming I can test my all for reef mix as well?

Thanks.

I appreciate all the help!!

 

[Randy Holmes-Farley]

You’re welcome.

Happy Reefing!