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High-purity magnesium media for placement in reef aquarium media reactors. May be employed in traditional calcium reactors or even blended in to pre-existing aquarium substratum. Regulates balance between calcium and carbonates in aquarium water. Composed of magnesium, calcium, and carbonates. Optimal average particle size for use in media reactors and calcium reactors. Free of chloride and sulfate. Mined in the USA.
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🇺🇸 Ship from USA · On Agora since 2025
$23.46