Tropic Marin® Block Molybdenumis a concentrated solution formulated to replenish key trace elements often depleted in marine aquariums:molybdenum, rubidium, vanadium, tungsten, tellurium, and hafnium. These elements play critical roles in coral metabolism, enzyme activation, and ionic balance—ensuring your reef system operates at peak biological efficiency.
Molybdenum, vanadium, and tungsten are essential cofactors in numerous metabolic reactions for corals, algae, and beneficial bacteria. Rubidium helps maintain ionic balance, while tellurium and hafnium—though present only in trace amounts—are naturally occurring in seawater and contribute to a stable, natural environment.
Using the innovativeTropic Marin® Block System, this supplement delivers a balanced, ratio-based dosing approach. By linking indicator elements to trace elements that are consumed together, it maintains precision and consistency—even for elements below detection limits of most ICP analyses.
Key Benefits
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Replenishesmolybdenum, rubidium, vanadium, tungsten, tellurium, and hafniumwith precision.
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Supportscoral metabolism, enzyme function, and ionic balance.
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Doses difficult-to-measure trace elements that are often below detection thresholds.
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Designed foraccurate, consistent dosingusing the Tropic Marin® Block System.
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Easy to use with bothmanual dosing or automated dosing pumps.
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Built-in dropper cap for precise measurement and convenience.
Element Concentrations
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Molybdenum (Mo):150 mg/L
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Rubidium (Rb):150 mg/L
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Vanadium (V):60 mg/L
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Tungsten (W):0.75 mg/L
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Tellurium (Te):0.15 mg/L
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Hafnium (Hf):0.15 mg/L
Dosage & Application
Add2 ml per 100 L (26 US gal)of aquarium water daily to raise levels by approximately:
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Molybdenum: +3 µg/L
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Rubidium: +3 µg/L
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Vanadium: +1.2 µg/L
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Tungsten: +0.015 µg/L
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Tellurium & Hafnium: +0.003 µg/L each
Maximum daily dosage:4 ml per 100 L (26 US gal).
Store in acool, dark placefor maximum stability.
Ingredients
Purified water, inorganic compounds of molybdenum, rubidium, vanadium, tungsten, tellurium, and hafnium.
Tropic Marin® Block Molybdenumis the reef-safe way to restore the subtle yet vital trace elements that support coral vitality, biological balance, and overall reef performance.






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