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.