Why is my iodine climbing?

[AaronFReef]

I have a 220g tank where I dose 2g of kalkwasser per day and ~115 mL of BRS Balling Hybrid method part one and two. This is a mix of soda ash with Tropical Marin A- trace elements at 575 mL per 5g for part one and calcium chloride with Tropical Marin K+ trace elements at the same ratio. Then I dose around 200 mL of Tropic Marin Part C daily.

The question is why is my iodine always elevated? I don’t use much carbon or GFO. My levels are around 550 ug/l. I’m sure it’s one of those tropic Marin parts but which and how do I correct this without stopping my dosing which has almost everything else perfect in an acro dense tank.

 

[Euphylliaphyle]

My levels are around 550 ug/l

Is this from ICP testing or other?

 

[Euphylliaphyle]

Some macroalgae will consume iodine. Are you running a refugium?

Here is another thread where Part C was a concern: https://www.reef2reef.com/threads/high-iodine-when-using-tropic-marin-balling-part-c.1150572/

@RelaxingWithTheReef , how did your situation resolve? EDIT - Disregard. I found it in another thread:
https://www.reef2reef.com/threads/s...pic-marin-part-c-icp-ms-test-results.1153152/

 

[Euphylliaphyle]

Then I dose around 200 mL of Tropic Marin Part C daily.

Are you using Tropic Marin Part C lot 52516 by chance? See the follow up thread:
https://www.reef2reef.com/threads/s...pic-marin-part-c-icp-ms-test-results.1153152/

 

[AaronFReef]

Oh beautiful! This is why the form is so valuable. I will track down what lot number my boxes are. Yes this was using ATI ICP.

 

[AaronFReef]

Are you using Tropic Marin Part C lot 52516 by chance? See the follow up thread:
https://www.reef2reef.com/threads/s...pic-marin-part-c-icp-ms-test-results.1153152/

You nailed it. I’m using exactly this batch. Unacceptable tropicmarin.

 

[azreefer93]

Beside TM Part C lot 52516, note that I suspect Tropic Marin Trace A also contains high iodine level. Check out my current thread here:
https://www.reef2reef.com/threads/icp-test-on-tropic-marin-trace-a-high-iodine.1167631/