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Aquarium Supplies
Home » Saltwater Aquarium Supplies  » Test Kits  » Specialty  »  Salifert Magnesium Test Kit
Salifert Magnesium Test Kit

Salifert Magnesium Test Kit

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Salifert Magnesium Test Kit Information

Product Manuals & Documentation

Salifert Magnesium Profi-Test
  • Magnesium is present in natural sea water in a fairly high concentration (1350 - 1500 mg/L) and is an essential element of chlorophyll which is necessary for photosynthesis. Without photosynthesis plants, algae and coral would not be able to survive.
  • Magnesium also helps to maintain the correct combination of calcium concentration and alkalinity as it slows down the formation of calcium carbonate which can absorb many important trace elements within the aquarium.
  • Maintaining a correct magnesium concentration is therefore very important and is indirectly responsible for fast coral and calcareous algae growth by making it possible to maintain correct calcium and alkalinity figures.
  • Magnesium is depleted by algae growth and also by the use of excessive kalkwasser or by going far beyond natural calcium, alkalinity and pH values.
  • The Salifert Magnesium Profi-Test is easy to use and accurate with measurements in steps of 30 mg/L.
  • Results are not affected by strontium and calcium interference.
  • Can be used for marine water only.
  • Calcium and strontium will not interfere when their total concentration is between 200 and 650 ppm. This is mostly the case.
  • Up to 50 tests.
Keep out of reach of children. Not for consumption.

Magnesium Table
Note: If you took 1.5 ml of water in step 1 then multiply the calcium values by 2!
Reading in ml`s (step 6) Magnesium Concentration in ppm
0.00 1500
0.02 1470
0.04 1440
0.06 1410
0.08 1380
0.10 1350
0.12 1320
0.14 1290
0.16 1260
0.18 1230
0.20 1200
0.22 1170
0.24 1140
0.26 1110
0.28 1080
0.30 1050
0.32 1020
0.34 990
0.36 960
0.38 930
0.40 900
0.42 870
0.44 840
0.46 810
0.48 780
0.50 750
0.52 720
0.54 690
0.56 660
0.58 630
0.60 600
0.62 570
0.64 540
0.66 510
0.68 480
0.70 450
0.72 420
0.74 390
0.76 360
0.78 330
0.80 300
0.82 270
0.84 240
0.86 210
0.88 180
0.90 150
0.92 120
0.94 90
0.96 60
0.98 30

Manufacturer Info

Salifert is a Holland base company that produces top of the line test kits as well as tank additives and foods for marine and reef aquariums.


no warranty

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Salifert Magnesium Test Kit Reviews

Average Rating
(34 reviews)
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of 4

Great Product

Reviewers Rating Excellent!

Posted: 6/14/2013 from GLENVIEW, IL UNITED STATES
5.0 5
Experience Level: Expert

Comments: This kit is simple to use, easy to identify end point and helped get magnesium back on track. Thanks again

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Reviewers Rating Excellent!

Posted: 4/1/2013 from MIAMI, FL UNITED STATES
5.0 5
Experience Level: Expert

Comments: precise is a good product

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easy to use

Reviewers Rating Great

Posted: 2/11/2013 from ANAHEIM, CA UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: seems pretty accurate and easy to use. comes with syringes that make things easy and keeps your hands dry. Works for me and is reasonably priced

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Great test kit

Reviewers Rating Excellent!

Posted: 2/1/2013 from CONROE, TX UNITED STATES
5.0 5
Experience Level: Expert

Comments: Although there are alot of components to this testing kit, it is extremely accurate. The instructions are very straight forward. I have no complaints about this product.

1 of 1 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 8/25/2012 from Colorado Springs, CO UNITED ST
5.0 5
Experience Level: Expert

Comments: Works great. Used a red sea Mg test kit prior and no comparison. Easy to read, accurate and equal amounts of reagents so you won't run out of titrant before the other 2

1 of 1 People found this review helpful, did you? Yes No

Quality, consistant, accurate

Reviewers Rating Excellent!

Posted: 4/22/2012 from NEWARK, DE UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I purchased this kit after using another brand and being disappointed with it. I was happy with the results and had no trouble reading the plunger on the syringe. Make sure not to loose the instructions for this because you WILL need the chart to read the level of Mg. If the reagents were available seperately it would be icing on top but they are not. Not to worry, the price is good and accuracy does not suffer a bit, I found it better than the ELOS.

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Not even sure if this works

Reviewers Rating Unsatisfactory

Posted: 2/8/2012 from LOGAN, UT UNITED STATES
0.5 5
Experience Level: Intermediate

Comments: The directions are unclear and determining the exact amount of Mag based on the location of the plunger is less than exact. This is however the first mag test I have used to maybe they are all like this. Testing mag is a PITA with this test kit.

0 of 6 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 1/10/2012 from ANTIOCH, CA UNITED STATES
5.0 5
Experience Level: Beginner

Comments: Work good!!!!

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Easy to use

Reviewers Rating Excellent!

Posted: 12/15/2011 from JACKSON, AL UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I've been reefing for about 4 yrs now, just this last Febuary I started up a 90 gal. and although I have been dosing magnesium I have never tested for it. I have been questioning my levels and until now I was unsure but with this easy test that showed my Mag at 1470 I now am sure it is not an issue and I will be able to adjust my dosing to stay right on with it. This is my second Salifert test kit, both are easy to use and read.

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Reviewers Rating Great

Posted: 10/21/2011 from Chicago, IL UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: Salifert tests are easy to use. I get mixed readings if I do multiple tests in a row though... I wish it went past 1500 since I am trying to dose for bryopsis... I recommend these tests though...

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of 4
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