Red Sea

RedSea Magnesium Pro Test Kit

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Why does BRS recommend this?

Our favorite all-around test kits are the red sea kits.  With easy to follow directions, and consistent results, the Red Sea Magnesium test kit can always be found in our testing closet.  The titration is made even easier with the included syringe holder that makes it much easier than almost all other test kits available.

Healthy coral growth depends on providing a proper balance of Calcium, Alkalinity, and Magnesium. Red Sea Magnesium Pro Test Kit accurately measures magnesium levels.

Magnesium Kit includes:

  • 100 tests
  • Analytical grade glass vials
  • Easy-to-use, high precision Titrator
  • Affordable reagent refills.


Red Sea produces a line of kits they call the Reef Foundation kits including Calcium, Alkalinity and Magnesium. Providing a balance of these elements promotes proper coral health and growth.

Red Sea Magnesium Pro Test Kit Includes:

  • 100 tests
  • Accuracy: ±10 ppm
  • Range: ∞
  • Test Type: Titrator
  • Affordable reagent refills


A successful coral reef aquarium depends on how well you maintain the water parameters which are the key to a stable coral environment. All of the elements found in natural seawater play a role in providing optimal water parameters, but some are more significant than others. These elements, the foundation of the reef environment, include the three major elements: Calcium (Ca), Magnesium (Mg) and Carbonates (CO3). All three have a major effect on water chemistry (pH stability, Alkalinity, ionic strength) and on many of the coral’s biological processes (skeleton formation, ions exchange, photosynthesis).


The foundation elements complement each other in the formation of coral skeleton. If not balanced correctly one of the elements will quickly limit healthy coral growth.  Using Red Sea test kits will allow you to accurately measure these levels and guide you on your path to reefing success.


Manual Owners Manual

More Information
UPC 730773214150
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Product Questions

I am needing a Red Sea Foundation Magnesium Reagent (Liquid) refill kit but do not see anything listed anywhere. If you sell them, why are they not listed? I need to know before I place my order.
Question by: James Garner on Apr 13, 2016, 11:56 PM
Great question!
I have included a link to the refill kit for Red Sea Magnesium. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 19, 2016, 10:29 AM