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Your cart is empty.Salifert Magnesium Profit-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 Profit-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.Warning!Keep out of reach of children. Not for consumption.
Jone Liu
Reviewed in the United States on March 1, 2025
I often need to use the thing, my saltwater aquarium every week to test the water quality, easy to use, easy to operate.
Andrew
Reviewed in the United States on February 12, 2025
Second time buying
Joshua1316
Reviewed in the United States on January 6, 2025
Great product, easy to use and accurate
dewi
Reviewed in the United States on January 3, 2025
Product box was squashed when arrived. It came inside an amazon paper bag with no padding. This item has liquids and a plastic mixing container. Amazon should have sent it in a box or padded paper bag.Despite poor shipping conditions, the product came in tact and no items were spilled or broken.*The critical issue is that the test will NOT work for freshwater tanks when magnesium levels are below 30ppm. MANY OWNERS WITH FRESHWATER TANKS TYPICALLY HAVE MAGNESIUM LEVELS WAY BELOW 30ppm.—A Google search will tell you that planted freshwater tanks should have MAGNESIUM levels around 5ppm but can be more (depending on you calcium to magnesium ratio).**the kit box and the amazon product description does NOT tell you the sensitivity range of test. THIS IS EXTREMELY IMPORTANT TO KNOW BEFORE YOU BUY THIS KIT (since most freshwater tanks do mot fall in the sensitivity range of this kit).—>This is why some reviewers complain that this kit does not work for them. This kit will work for saltwater tanks that typically have higher levels of magnesium but can work for freshwater tanks when magnesium levels are above 30ppm.——TO CONFIRM IF THIS TEST WORKS WHEN YOU NOTICE THAT THE COLOR DOES NOT CHANGE TO PINK AFTER ADDING Mg-1. ——1. Take 2 ml of freshwater from your tank and put it into the mixing vial that is provided with the kit.2. Add at least 1/64 teaspoon of epsom salt (magnesium sulfate). If you dont have a teaspoon that small you may still estimate using 1/8 of teaspoon. Regardless, 1/64 teaspoon is enough to create a positive test signal that is detectable by this kit. This mixture is your POSITIVE CONTROL where you have a high enough amount of magnesium to be detectable by this kit.3. Add 5 drops of Mg-1 reagent.4. VOILA! You should have a pink color. The Salifert magnesium test CAN detect magnesium——unfortunately you may have already realized it can NOT detect magnesium in your freshwater tank, likely because your freshwater tank is below the sensitivity range of thisbkit. Thie Lowest Level of Quantification is listed in the instruction manual sensitivity chart (it is 30ppm).*****A Google search will tell you that there are Very Little options (or products) at this time for testing low levels of magnesium, which are typical for freshwater tanks.*****
The Topcat
Reviewed in the United States on June 12, 2024
Easy to use and very accurate.
R. Petersen
Reviewed in the United States on December 17, 2022
I run several marine aquariums. I manually test 6 parameters on each tank twice a week, have tried every single brand of test kits over the last 5 years or so, have owned automated testing systems (and found them completely inadequate and generally inaccurate), and routinely send in samples for ICPOES testing to confirm my manual results.This is clearly the most accurate hobbyist test currently available for magnesium. The test is easy to perform with a clear endpoint to the titration. Salifert recently shortened the test process by one step, making it even simpler to perform, without loss of accuracy.Some may be tempted to switch to the new Hanna magnesium checker. Don't do it. Overall, Hanna makes great hobbyist checkers, and they are my first choice for several parameters. Unfortunately, not so for the Hanna magnesium checker, which consistently gives reading of about 100 ppm lower than the actual value. I was frankly stunned how badly they flubbed this one, considering how good their gear is overall.
William Mares
Reviewed in the United States on October 21, 2022
Weird usage watch videos online to see how.
WolfSpyryt (Terry A Zahn)
Reviewed in the United States on January 18, 2020
I have a 72 Gallon Bowfront Reef tank. It is imperative to have proper magnesium levels for proper calcium and alkalinity stability.This test kit is accurate, easy to use and read. I had no problem with my first test. It precisely matches the test I had performed by our state university. I was relieved to see that my test was identical to the state test.Imagine my relief to see that I am achieving a successful and healthy environment. Viva la Nederlands!!! 😂
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