The role of iodine in reef aquariums
Iodine is naturally present in seawater at very low concentrations (approximately 60 µg/L). It plays a role in various biological processes, particularly in soft corals, gorgonians, sponges, crustaceans and macroalgae .
In a modern reef aquarium, iodine is quickly consumed by living organisms and removed by skimming. Its level can therefore gradually decrease, especially in tanks rich in soft corals or invertebrates.
Maintaining consistent concentrations helps to preserve a stable biological balance without overdosing, as iodine remains an element that must be handled with precision.
We offer a full range of products to target the main elements of seawater following ICP analysis or manual testing.
A simple, direct and controlled formulation
The Zoanthus Lab – Iodine solution is prepared from pharmaceutical grade sodium iodide (NaI) , dissolved in purified RO/DI water.
The concentration is rigorously adjusted to provide 5 mg/mL of elemental iodine . This choice guarantees optimal stability in aqueous solution, without the use of artificial chelating or stabilizing agents.
- ✔ Stable inorganic solution
- ✔ Chelator and stabilizer free
- ✔ Compatible with Balling, Triton method and other reef methods
- ✔ Accurate and consistent ICP reading
Concentration and dosage
- Concentration: 5 mg/mL of iodine (element I)
- Recommended dosage: 1 mL per 100 L of water
- Effect: +50 µg/L of iodine
- Gradual correction: do not exceed a cumulative increase of 30 µg/L over 24 hours
Supplementation should always be based on a recent ICP analysis . In cases of significant deficiency, dividing the correction over several days helps avoid any sudden changes in parameters.
Zoa Aqua Manager: your smart dosing assistant
Each Zoanthus Lab product can be controlled via our free Zoa Aqua Manager calculator. In just a few seconds, you get a precise and personalized dosage from your ICP analysis (Zoanthus Labs or any other laboratory).
Simply enter your actual water volume, your measured value, and your target. The system automatically calculates the appropriate correction, with the option of gradual dosing for optimal stability.
A tool designed for demanding aquarists who want a scientific and controlled approach to their supplementation.
Three ICP analyses tailored to each need
ICP REEF
The essentials for reef aquariums
Complete analysis of the major elements and trace elements essential for the regular monitoring of your reef aquarium.
- Key parameter tracking
- Detection of deviations
- Over 40 parameters analyzed
ICP MAX
Ultra-comprehensive diagnosis
In-depth reading with expanded spectrum including fluoride, nitrates, KH and reverse osmosis water analysis.
- Most detailed analysis
- Over 45 parameters analyzed + reverse osmosis water
- For discerning aquarists
ICP PURA
Special reverse osmosis water
Precise control of your preparation water to ensure a perfectly healthy base before any remineralization.
- RO/DI water verification
- Contaminant detection
- Secure the preparation
Usage and storage instructions
Add to a well-mixed area or settling tank. Shake well before use.
Store away from light, between 15 and 25°C. Since iodides can slowly oxidize in light, it is recommended to keep the bottle tightly closed. Recommended shelf life: 12 months.
- Product intended exclusively for use in aquariums.
- Keep out of reach of children.
- Do not swallow, do not ingest.
- In case of contact with eyes, rinse thoroughly with water.
As with any trace element, excessive supplementation is unnecessary and can unbalance the water. Regular ICP analysis remains the most reliable method for maintaining a stable aquarium in the long term.
