Tropic Marin® IOD is a highly concentrated Lugol’s solution specifically developed for the rigorous demands of marine reef aquariums. Unlike standard trace element mixes, IOD provides iodine in its most effective form—elementary I2—allowing for immediate biological uptake. Iodine is one of the most versatile trace elements in seawater, essential for everything from coral pigmentation and light adaptation to the physical development of crustaceans and the prevention of disease in fish. Because iodine is unstable in an aqueous environment and is rapidly depleted by protein skimming and ozone, regular supplementation is critical for a thriving reef.
Tropic Marin® IOD acts as a multi-functional catalyst that supports the health and appearance of nearly every inhabitant in a marine system.
Light Adaptation & Coloration: Significantly improves the ability of Anthozoa (hard corals) to adapt to high-intensity lighting, while specifically enhancing the formation of blue and violet pigments.
Essential for Crustaceans: Provides the iodine necessary for the hardening of chitinous shells, ensuring successful molting for shrimp, crabs, and lobsters.
Fish Health & Goitre Prevention: Acts as a critical component of thyroid hormones in fish, preventing the development of goitre and supporting metabolic stability.
Structural Growth: Crucial for Gorgonians and black corals, which deposit iodine directly into their axial skeletons, and for coralline algae, which utilize it in their surface structures.
Natural Disinfectant Properties: Elementary iodine has mild natural antiseptic qualities that can help bolster the resistance of fish and corals against certain pathogens.
How do I dose Tropic Marin® IOD? Add one drop per 200 L (50 US gallons) of aquarium system water daily. It should be added to an area of high circulation to ensure rapid distribution.
What is the maximum safe dosage? Do not exceed a maximum dose of 2 drops per 200 L per day. Iodine is a potent element, and over-supplementation can be harmful to sensitive livestock.
What happens if I miss a day of dosing? If a dose is missed, simply skip it and resume your normal schedule the following day. Never double the dose to "catch up," as this can cause a dangerous spike in iodine levels.
Does it expire or require special storage? Iodine is light-sensitive. It should be stored in its original amber bottle in a cool, dark place to maintain its potency and prevent degradation into less effective forms.
Tropic Marin® K+ Elements: Often used alongside IOD to provide a complete profile of cationic trace elements for total coral nutrition.
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