Block Analysis - Iodine - Tropic Marin

Tropic Marin® Block Iodine is a concentrated multi-element solution designed to restore essential halogens and trace minerals — iodine, fluorine, bromine, and selenium — in marine aquariums. These elements are vital for coral health, skeletal structure, and resilience against environmental stress.

Iodine, fluorine, and bromine help reinforce both organic and inorganic skeletal structures while supporting light acclimation in corals. Selenium acts as a natural antioxidant, protecting coral tissue from oxidative stress and promoting healthy recovery after fragging or environmental fluctuations.

The Tropic Marin® Block System takes a modern approach to trace element supplementation — using indicator elements to maintain a balanced ratio of trace elements that are often consumed together and can be difficult to measure individually. This ensures precision dosing and long-term stability even when certain parameters fall below detectable limits.

Key Benefits

• Replenishes essential halogens and trace minerals — iodine, fluorine, bromine, and selenium.

• Supports coral growth, color, and light adaptation.

• Provides antioxidant protection for improved tissue recovery.

• Balanced dosing using Tropic Marin’s advanced Block System for elements with linked consumption rates.

• Easy and accurate dosing with the built-in dropper cap.

• Compatible with both manual and automated dosing systems.

Concentration per Liter

• Iodine (I): 875 mg/L

• Fluorine (F): 1110 mg/L

• Bromine (Br): 435 mg/L

• Selenium (Se): 0.5 mg/L

Dosage

Add 2 ml per 100 L (26 US gal) of aquarium water daily to increase concentrations by:

• Iodine: +17.5 µg/L

• Fluorine: +22.2 µg/L

• Bromine: +8.7 µg/L

• Selenium: +0.01 µg/L

Maximum dosage: 4 ml per 100 L (26 US gal) per day.

Store in a cool, dark place to maintain stability.

Ingredients

Purified water, inorganic iodine, fluorine, bromine, and selenium compounds.