Iodine Treatment

Question
Good day!

The question is in regards with our 344.70 cubic meters Shark Tank Community. The tank consists of a Shovel Nose Guitar Fish, Leopard Sharks, Black and White Tip Reef Sharks, Nurse Sharks, and Bamboo Sharks. The inside size (mm) of the tanks is 11490x6000x5000 with a good water quality and it passes through a series of biological and mechanical filtration (bio-filter sands and protein skimmers).

The problem is that some of the Black and White Tip Reef Sharks are showing a thyroid problem. As a Laboratory Analyst, I know that there's an Iodine deficiency though Iodine is naturally occurring in sea water and sea water species. I know that the cause of the deficiency is because of our filtration system. I just researched that the concentration of Iodine must not exceed at 0.06ppm. Currently, I don't have an Iodine Test Kit and my problem is, how can I compute the exact amount of Iodine Pellets to be added in the tank and what ideal concentration should I maintain.

I am not a Marine Biologist nor an Aquarist graduate and I am only conducting self studies and research in order for me to understand their behavior and how to take care of them. I am a Laboratory Technologist graduate and my field is in Chemistry. I am maintaining the water quality of our Oceanarium here.

Please help me understand more. Is it possible for me to get in touch with you more often? My email address is . I also want to get connections with marine water hobbyist and experts so that I can learn more and progress in this field.

Your immediate response will be highly appreciated!

Thank you!  

Answer
Hi R-Jay,
Wow... where is this Leviathan? Well, the problem is you need  daily testing and the system's water chemistry patterns recorded over at least a 3 week period to begin with. This cannot be done without testing and test kits. There is no way to know the levels of iodine in the system or the amount to dose, without it. Sorry. In a system this size you really should have an engineer working with the water chemistry.