Dosing iodine?

[Pod_01]

Many, many supplement producers will break down Iodine use in a coral on their sites. Just have to google it.

But here is a scholarly study. They mainly use it for age dating but they specifically state they see it heavily in the bone structure and it is used for gas exchange in the corals. https://www.sciencedirect.com/science/article/abs/pii/S0265931X17308354?via=ihub

And another. Talks about the relationship of Iodine with coral and other elements. https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2023.1264380/full

I don't think there is a long term study of dosing iodine specifically in aquaria. But it has been proven time and again that stable iodine levels in aquaria does help with coral growth and coloration.

My ICP showed low Iodine. I dosed. My tank EXPLODED with growth. That was my only change. That right there is enough for me.

Thank you, I was hoping for specific study in corals we keep like acros etc… Both of the articles are about deep-sea corals. I am not sure if we keep these in a reef tank?

My ICP showed low Iodine. I dosed. My tank EXPLODED with growth. That was my only change. That right there is enough for me.

That is interesting, when I tried to keep Iodine at recommended levels, I did not observe impact on growth. I did observe fluffier corals namely devil hand. These days I still dose Iodine that is in TM A and K and as long as my devil hand is happy I figure there is enough Iodine in the system. Maybe a silly method but for now it seems to work.

Also this coral looks fluffy with Iodine.

It may be due to other trace elements. I never did only one trace element at a time…

Thank you for sharing your observation.

 

[braaap]

Thank you, I was hoping for specific study in corals we keep like acros etc… Both of the articles are about deep-sea corals. I am not sure if we keep these in a reef tank?


That is interesting, when I tried to keep Iodine at recommended levels, I did not observe impact on growth. I did observe fluffier corals namely devil hand. These days I still dose Iodine that is in TM A and K and as long as my devil hand is happy I figure there is enough Iodine in the system. Maybe a silly method but for now it seems to work.

Also this coral looks fluffy with Iodine.

It may be due to other trace elements. I never did only one trace element at a time…

Thank you for sharing your observation.

There are other articles as well that discuss how iodine is used to shield from excessive par and with gas exchange.

I don’t shoot for a specific number as the iodine test kits I have tried don’t seem to be even remotely accurate.

What I know for certain is it helped my tank. It helped a friends tank. I’ll continue to dose it as long as my tank looks good and my once every 4 month ICP says my levels are decent.

 

[Pod_01]

There are other articles as well that discuss how iodine is used to shield from excessive par and with gas exchange.

I read about this from some of the Iodine bottle suppliers but I wasn’t able to find a study that explains this behaviour.
I did find articles online, but they all seem to repeat the supplier’s statements/ claim.

Most follow this:

Especially the sensitivity to bring light!!!
The other symptoms could be caused by other deficiencies or factors… too much light/ not enough light, not enough PO4 or N etc…

 

[Randy Holmes-Farley]

There are other articles as well that discuss how iodine is used to shield from excessive par and with gas exchange.

I don’t shoot for a specific number as the iodine test kits I have tried don’t seem to be even remotely accurate.

What I know for certain is it helped my tank. It helped a friends tank. I’ll continue to dose it as long as my tank looks good and my once every 4 month ICP says my levels are decent.

I have seen no study that actually shows that iodine is used to shield from excessive par as you suggest, only statements by hobby authors asserting it. Same for any of the claims hobby folks assert for it.

That doesn’t mean it isn’t true or isn’t true under some circumstances and not others. We keep a huge variety of organisms in many different husbandry situations and so folks results may vary.

One interesting hypothesis that came up is that the presence of iodine may impact the chemical form of other trace elements and impact their bioavailability. If that is the case, some results may depend on how much and what form of other elements are present in the water.

 

[Randy Holmes-Farley]

I read about this from some of the Iodine bottle suppliers but I wasn’t able to find a study that explains this behaviour.
I did find articles online, but they all seem to repeat the supplier’s statements/ claim.

Most follow this:

Especially the sensitivity to bring light!!!
The other symptoms could be caused by other deficiencies or factors… too much light/ not enough light, not enough PO4 or N etc…

This same company behavior happens with other ions as well. Barium, for example. I think they read and then reproduce the claims of other hobby folks without actually spending the time and effort to tract down original information that might validate it. In the end, I suspect there isn’t such info on some of them, and the mere incorporation into skeletons or tissues Is the limit of actual data.

I searched pretty carefully for barium and rubidium and found nothing despite unwavering assertions by some hobby sources. Other hobby sources weee more careful about such claims, so not all are making the mistake in the same way.

 

[WILDREEFER1000]

Iodine is just 100% need for those who have strong led lights. Since I have strong leds light my iodine levels decrease very fast, I not had this problem befor with t5. And when the iodine level is to low you get burned tips on many corals and alga growth on it, also more stn. I experienced it enough time ms for having no doubts about it. In high led par iodine is protective and necessary. Some species also, same Xenia die when it is too low, but beforz their pumping become slower. when iodine is to low, you can also see it of the Tipps of the Milka. Also generall health of all corals benefits from it, when you dose it, even if some are OK without, but bettet with. It has also an influence on the colors, if too high for exemple yellow become green, if not enough coral brownish . Also when the level is too high over 80 or 100 you might get negative effects, not on corals but increased alga growth. All corals farmer also know it, that it is important, I never meet one that said the contrary. And In the dsr method for example wich just dose dose a few elements and not all, as they say all are not necessary, they dose iodine.

 

[Randy Holmes-Farley]

Iodine is just 100% need for those who have strong led lights. Since I have strong leds light my iodine levels decrease very fast, I not had this problem befor with t5. And when the iodine level is to low you get burned tips on many corals and alga growth on it, also more stn. I experienced it enough time ms for having no doubts about it. In high led par iodine is protective and necessary. Some species also, same Xenia die when it is too low, but beforz their pumping become slower. when iodine is to low, you can also see it of the Tipps of the Milka. Also generall health of all corals benefits from it, when you dose it, even if some are OK without, but bettet with. It has also an influence on the colors, if too high for exemple yellow become green, if not enough coral brownish . Also when the level is too high over 80 or 100 you might get negative effects, not on corals but increased alga growth. All corals farmer also know it, that it is important, I never meet one that said the contrary. And In the dsr method for example wich just dose dose a few elements and not all, as they say all are not necessary, they dose iodine.

It may be useful. It was not for me. I advise folks to test for themselves in their system if it seems useful rather than just accepting that it is.

 

[rishma]

I had an iCP a year ago that showed low iodine. It bought some and started dosing per manufacturer recommendation based on calcium consumption. I have not noticed any impact on the corals. Not saying it has or has not done something, but I have not seen anything in my LPS that I associate with the change. My very recent Icp test showed iodine was at a good level, so I’ll keep dosing because I think the bottle I bought is nearly a lifetime supply. If I ever run out I’ll likely not replace it and see what happens.

I do remember from the late 90’s that when I dosed lugols, my Xenia pulsed faster and grew faster. When I didn’t dose the pulsing would slow or nearly stop. At the time it seemed like a positive effect, because the pulsing was neat. I took it as a sign of health but in hindsight I really have no idea.

 

[Randy Holmes-Farley]

It has been suggested that the utility of iodide in some scenarios may be to help maintain availability of certain trace elements under the highly oxidizing environment of bright lighting and photosynthesis. If that is true, then the apparent benefit of iodine may depend on the availability (or limited availability) of these elements. If these are not in limited supply, the need for iodine could thus be lower or nonexistent.

 

[rishma]

It has been suggested that the utility of iodide in some scenarios may be to help maintain availability of certain trace elements under the highly oxidizing environment of bright lighting and photosynthesis. If that is true, then the apparent benefit of iodine may depend on the availability (or limited availability) of these elements. If these are not in limited supply, the need for iodine could thus be lower or nonexistent.

My current tank has moderate light intensity and trace element dosing that keeps them around target levels (at least those detectable by ICP-OES). So maybe that fits. Iodine might not be important in my current tank.

What would make a highly oxidizing environment? Ozone?

 

[Randy Holmes-Farley]

My current tank has moderate light intensity and trace element dosing that keeps them around target levels (at least those detectable by ICP-OES). So maybe that fits. Iodine might not be important in my current tank.

What would make a highly oxidizing environment? Ozone?

Photosynthesis produces some highly oxidizing by products.

Generation of superoxide anion in chloroplasts of Arabidopsis thaliana during active photosynthesis: a focus on rapidly induced genes - PMC

The antioxidant defense system involves complex functional coordination of multiple components in different organelles within the plant cell. Here, we have studied the Arabidopsis thaliana early response to the generation of superoxide anion in ...

pmc.ncbi.nlm.nih.gov

Reactive oxygen species (ROS) are continuously produced during photosynthesis in the chloroplasts by partial reduction of oxygen molecules or energy transfer to them. The major site of superoxide anion (O•−2) production is the thylakoid membrane-bound primary electron acceptor of photosystem I (PSI). This O•−2 is further converted to hydrogen peroxide (H2O2) within the chloroplast mostly by CuZn–superoxide dismutase (SOD) (Asada 1994). At the same time, excited triplet chlorophyll molecules in photosystem II (PSII) interact with O2 to generate singlet oxygen (Macpherson et al. 1993). Plants had to evolve efficient strategies to cope with the accumulation of these potentially toxic compounds that are integral components of oxygenic photosynthesis (Mittler 2002).

 

[WILDREEFER1000]

It may be useful. It was not for me. I advise folks to test for themselves in their system if it seems useful rather than just accepting that it is.

Yes but what corals did you keep and under Wich light and intensity? You have a picture of the tank?

 

[WILDREEFER1000]

I also seem that iodine level and halogen are correlated, fluor for example seems to go down with iodine, I have good results dosing halogen not only iodine alone

 

[Randy Holmes-Farley]

Yes but what corals did you keep and under Wich light and intensity? You have a picture of the tank?

My tank used 250 w double ended metal halide bulbs (2 x 250w DE 10,000k mh lamps, overdriven by a dual PFO ballast) and a variety of fluorescents. I kept a mixed reef for 20 years, so it changed over time, keeping a variety of different organisms. Click my build thread link to see some pictures.

Like your tank, mine too depleted iodine very fast (a few days from NSW levels to undetectable), but didn't seem noticeably different when dosing vs not dosing iodide. Iodine is incorporated very rapidly into algae (macro and micro), although it does not seem to make it grow notably faster in my tests.

I certainly allow that iodine may have some situations where it is a benefit, and a few organisms have a clear use for it, though most of us do not keep those. By the same token, i think you should allow for the fact that not all tanks need it, even those with pretty bright lighting.

 

[Randy Holmes-Farley]

I also seem that iodine level and halogen are correlated, fluor for example seems to go down with iodine, I have good results dosing halogen not only iodine alone

Fluoride seems mostly to be incorporated into calcium carbonate that is deposited. I'm not convinced that's a benefit, or that it relates at all to the ways that iodine is used (they are chemically very different in organisms) but I know some folks think they see a benefit when we had a thread about fluoride dosing, and without testing it's hard to prove or disprove it. .

 

[ninjamyst]

Depends on the coral. Almost all my wife sees a noticeable color difference....

How many wives do you have????

 

[WILDREEFER1000]

How many wives do you have????

 

[WILDREEFER1000]

My tank used 250 w double ended metal halide bulbs (2 x 250w DE 10,000k mh lamps, overdriven by a dual PFO ballast) and a variety of fluorescents. I kept a mixed reef for 20 years, so it changed over time, keeping a variety of different organisms. Click my build thread link to see some pictures.

Like your tank, mine too depleted iodine very fast (a few days from NSW levels to undetectable), but didn't seem noticeably different when dosing vs not dosing iodide. Iodine is incorporated very rapidly into algae (macro and micro), although it does not seem to make it grow notably faster in my tests.

I certainly allow that iodine may have some situations where it is a benefit, and a few organisms have a clear use for it, though most of us do not keep those. By the same token, i think you should allow for the fact that not all tanks need it, even those with pretty bright lighting.

It seems very important when leds are used, they seems to be more agressif than halides or t5, I have that problem only since the use of the leds. And iodine clearly helps it test with and without. Everytimes without I get burned Tipps and algua

 

[Randy Holmes-Farley]

It seems very important when leds are used, they seems to be more agressif than halides or t5, I have that problem only since the use of the leds. And iodine clearly helps it test with and without. Everytimes without I get burned Tipps and algua

That may be. There are reasons that high lighting might need an antioxidant benefit of iodide, but folks have been claiming iodine benefits since before med lights.

 

[braaap]

How many wives do you have????

Not enough but also too many. Make sense?