400 g Magnesium Dry

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Magnesium is an essential part of coral development and water chemistry. Magnesium has multiple roles in the reef tank, most notably its ability to let calcium and alkalinity become supersaturated and keep them steady and balanced. Dry Magnesium additives are very cost-effective and when mixed into a solution can be just as good or better than liquid additives.


Aquaforest Magnesium Dry can be mixed with Calcium Dry to create a solution that when dosed will maintain proper calcium and magnesium levels with a single dosing pump.


Magnesium Dry can be used with:

  • SPS corals
  • LPS Corals
  • Soft Corals
  • Clams


pdf Aquaforest Systems Guide



To make a solution add 50g of Aquaforest Dry Calcium and 10g of Aquaforest Dry Magnesium to 1000 mL of RODI water. Stir vigorously and then let it sit for 24 hours before use.

It is suggested to start with a dose of 5mL per 27 gallons of aquarium water daily. After each dose, test your aquarium's Calcium level and adjust dosage as necessary for your systems requirements.

It is highly recommended to add calcium solution slowly to a high flow area of the tank to help reduce any precipitation.


Contains: Magnesium chloride

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