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Seachem Laboratories Reef Status: Magnesium, Carbonate, Borate, Alkalinity Test Kit

Seachem Laboratories Reef Status: Magnesium, Carbonate, Borate, Alkalinity Test Kit


Item #: SC4119

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SeaChem Reef Status Magnesium Testing (includs tests for Borate and Carbonate)

Four kits in one! Tests for magnesium through a titration based procedure in increments of 12.5 mg/L. Tests for carbonate alkalinity, borate alkalinity and total alkalinity in 0.1 meq/L resolution through a titration based procedure. The kit resolves borate from carbonate and, along with magnesium, this presents a clear picture of the tank`s buffering capacity as well as a very reliable determination of the critical carbonate content required for coral and coralline growth.
  • 75 titration tests each for borate, carbonate & magnesium
  • directly measures magnesium
  • resolves carbonate and borate
  • interference free
  • includes reference validation
  • designed for the reef aquarist

Manufacturer information

Seachem Laboratories, Inc. was established in 1980 by Dr. Leo G. Morin. Seachem moved into a state of the art 110,000 square foot facility in Madison, Georgia marking their 25th anniversary in the industry in 2005. This facility includes production and research laboratories, manufacturing, inventory, shipping, and office space.

4 Stars


Reviewed on
February 27, 2019

No, I would not recommend this.


Pros: none

Cons: complicated

The most complicated test kit I have ever used!! not even sure I did it correctly. it requires cotton balls and all sorts of transfers..

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Reviewed on
October 17, 2017

Yes, I would recommend this.


Pros: The best

So efective

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Reviewed on
April 15, 2017

Yes, I would recommend this.

Useless for me

Pros: I found none.

Cons: In my review.

Print on instructions very small and hard to read for me and I am wearing graduated specs with lower (magnifying) lenses +2.5. All my other kits (nitrate, ammonia, nitrite, calciuim, dKH) are easily readable for me. What I can read with great difficulty plus complicated testing procedure makes it useless for me. And not all equipment parts were provided.

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Reviewed on
February 27, 2015

Yes, I would recommend this.

total alk bad

reagent 1 total alk very pale blue imposible to read turn yellow indetectable change color

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nathane gray

Reviewed on
January 08, 2013

Yes, I would recommend this.

works great corals thrive

A bit complicated at first, all magnesium tests are. they require multiply steps. I like the kit and the box, it also does a high quality test for alkalinity. it does alot of tests. If magnesium gets low then your calcium evaporates. BAD

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otis glamore

Reviewed on
June 13, 2011

Yes, I would recommend this.

Magnesium Matters

When you first open the case, the response is "how could this be so complicated", but then you realize that this kit contains multiple tests. The magnesium test IS a little complicated, but your magnesium levels are important to know, so I would recommend this kit to anyone with a reef system

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Reviewed on
April 01, 2011

Yes, I would recommend this.


Really loved this test. Not the fastest or easiest, but very precise and consistent, the best one I've tried.

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joao carlos destro

Reviewed on
September 21, 2010

Yes, I would recommend this.

Very Accurate!

This test realy works! ***** Its complex when you open the box, but after you understood the instructions is very easy to operate and obtain precise results! When the titration changes completely the collor when obtain the result. (from Pink to Blue (magnasium) or Blue to Yellow in Alk tests...)

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todd sawasky

Reviewed on
June 07, 2010

Yes, I would recommend this.


Anyone who states they dont have time to run a magnesium test shouldnt be into reef keeping to begin with. I have used this mg test exclusively since I have been into Reef Keeping and it is by far the most accurate one out there. If someone says otherwise they are not performing the test correctly. The Alkalinity test is a nice bonus that comes with this test kit. I will buy it again.

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Reviewed on
April 09, 2009

Yes, I would recommend this.

Great test kit!!

This is by far one of the easiest to use mg. tests I have tried. Compared to tropmarin this on is a breeze and the color changes are bright and obvious unlike some of the other kits that are very subtle differences in color. I can get an accurate mg test in under 5 minutes, and there are no powders and microscopic spoons that can be easily under or over measured. Highly recommened

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