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Dry magnesium crystals that need to be dissolved in RODI water to be dosed into aquarium.
Dissolve 10g of magnesium crystals to 1L of RODI water.
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MARCH MADNESS - my favorite month. Saturday - Sunday Save 30% Off all frozen food, in stock fish and inverts ! In store only. Buy 2 get 1 free on $10 frags. In store only.
